Home / 15,432.10-21,331.29-14,207.38

Finding the Fourth Proportional to 15,432.10, 21,331.29 and 14,207.38

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Solution

The fourth proportional to 15,432.10, 21,331.29 and 14,207.38 is: 19,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.10 : 21,331.29 = 14,207.38 : x
  2. Step 2: Convert to fraction form
    15,432.10/21,331.29 = 14,207.38/x
  3. Step 3: Cross multiply
    15,432.10x = 21,331.29 × 14,207.38
  4. Step 4: Simplify right side
    15,432.10x = 303,061,742.92
  5. Step 5: Solve for x
    x = 303,061,742.92/15,432.10
  6. Step 6: Final answer
    x = 19,638.40

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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.