Home / 21,160.59-29,204.85-13,507.17

Finding the Fourth Proportional to 21,160.59, 29,204.85 and 13,507.17

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Solution

The fourth proportional to 21,160.59, 29,204.85 and 13,507.17 is: 18,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.59 : 29,204.85 = 13,507.17 : x
  2. Step 2: Convert to fraction form
    21,160.59/29,204.85 = 13,507.17/x
  3. Step 3: Cross multiply
    21,160.59x = 29,204.85 × 13,507.17
  4. Step 4: Simplify right side
    21,160.59x = 394,474,873.77
  5. Step 5: Solve for x
    x = 394,474,873.77/21,160.59
  6. Step 6: Final answer
    x = 18,641.96

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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.