Home / 42,013.92-63,031.80-15,720.72

Finding the Fourth Proportional to 42,013.92, 63,031.80 and 15,720.72

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Solution

The fourth proportional to 42,013.92, 63,031.80 and 15,720.72 is: 23,585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,013.92 : 63,031.80 = 15,720.72 : x
  2. Step 2: Convert to fraction form
    42,013.92/63,031.80 = 15,720.72/x
  3. Step 3: Cross multiply
    42,013.92x = 63,031.80 × 15,720.72
  4. Step 4: Simplify right side
    42,013.92x = 990,905,278.90
  5. Step 5: Solve for x
    x = 990,905,278.90/42,013.92
  6. Step 6: Final answer
    x = 23,585.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.