Home / 21,429,009.85-29,572,273.23-12,610,410.76

Finding the Fourth Proportional to 21,429,009.85, 29,572,273.23 and 12,610,410.76

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Solution

The fourth proportional to 21,429,009.85, 29,572,273.23 and 12,610,410.76 is: 17,402,507.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429,009.85 : 29,572,273.23 = 12,610,410.76 : x
  2. Step 2: Convert to fraction form
    21,429,009.85/29,572,273.23 = 12,610,410.76/x
  3. Step 3: Cross multiply
    21,429,009.85x = 29,572,273.23 × 12,610,410.76
  4. Step 4: Simplify right side
    21,429,009.85x = 372,918,512,389,390.62
  5. Step 5: Solve for x
    x = 372,918,512,389,390.62/21,429,009.85
  6. Step 6: Final answer
    x = 17,402,507.86

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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.