Home / 21,354.96-29,447.64-15,414.96

Finding the Fourth Proportional to 21,354.96, 29,447.64 and 15,414.96

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Solution

The fourth proportional to 21,354.96, 29,447.64 and 15,414.96 is: 21,256.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.96 : 29,447.64 = 15,414.96 : x
  2. Step 2: Convert to fraction form
    21,354.96/29,447.64 = 15,414.96/x
  3. Step 3: Cross multiply
    21,354.96x = 29,447.64 × 15,414.96
  4. Step 4: Simplify right side
    21,354.96x = 453,934,192.69
  5. Step 5: Solve for x
    x = 453,934,192.69/21,354.96
  6. Step 6: Final answer
    x = 21,256.62

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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.