Home / 15,445.43-21,314.64-8,371.87

Finding the Fourth Proportional to 15,445.43, 21,314.64 and 8,371.87

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Solution

The fourth proportional to 15,445.43, 21,314.64 and 8,371.87 is: 11,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.43 : 21,314.64 = 8,371.87 : x
  2. Step 2: Convert to fraction form
    15,445.43/21,314.64 = 8,371.87/x
  3. Step 3: Cross multiply
    15,445.43x = 21,314.64 × 8,371.87
  4. Step 4: Simplify right side
    15,445.43x = 178,443,373.28
  5. Step 5: Solve for x
    x = 178,443,373.28/15,445.43
  6. Step 6: Final answer
    x = 11,553.15

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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.