Home / 21,210,263,958.15-29,271,470,748.69-11,694,786,281.10

Finding the Fourth Proportional to 21,210,263,958.15, 29,271,470,748.69 and 11,694,786,281.10

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Solution

The fourth proportional to 21,210,263,958.15, 29,271,470,748.69 and 11,694,786,281.10 is: 16,139,525,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210,263,958.15 : 29,271,470,748.69 = 11,694,786,281.10 : x
  2. Step 2: Convert to fraction form
    21,210,263,958.15/29,271,470,748.69 = 11,694,786,281.10/x
  3. Step 3: Cross multiply
    21,210,263,958.15x = 29,271,470,748.69 × 11,694,786,281.10
  4. Step 4: Simplify right side
    21,210,263,958.15x = 342,323,594,539,399,774,208
  5. Step 5: Solve for x
    x = 342,323,594,539,399,774,208/21,210,263,958.15
  6. Step 6: Final answer
    x = 16,139,525,430.46

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.