Home / 42,472.10-63,708.24-12,890.18

Finding the Fourth Proportional to 42,472.10, 63,708.24 and 12,890.18

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Solution

The fourth proportional to 42,472.10, 63,708.24 and 12,890.18 is: 19,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,472.10 : 63,708.24 = 12,890.18 : x
  2. Step 2: Convert to fraction form
    42,472.10/63,708.24 = 12,890.18/x
  3. Step 3: Cross multiply
    42,472.10x = 63,708.24 × 12,890.18
  4. Step 4: Simplify right side
    42,472.10x = 821,210,681.08
  5. Step 5: Solve for x
    x = 821,210,681.08/42,472.10
  6. Step 6: Final answer
    x = 19,335.30

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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.