Home / 21,012,157.35-28,997,220-11,844,800.10

Finding the Fourth Proportional to 21,012,157.35, 28,997,220 and 11,844,800.10

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Solution

The fourth proportional to 21,012,157.35, 28,997,220 and 11,844,800.10 is: 16,346,073.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,157.35 : 28,997,220 = 11,844,800.10 : x
  2. Step 2: Convert to fraction form
    21,012,157.35/28,997,220 = 11,844,800.10/x
  3. Step 3: Cross multiply
    21,012,157.35x = 28,997,220 × 11,844,800.10
  4. Step 4: Simplify right side
    21,012,157.35x = 343,466,274,210,735.94
  5. Step 5: Solve for x
    x = 343,466,274,210,735.94/21,012,157.35
  6. Step 6: Final answer
    x = 16,346,073.78

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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.