Home / 42,165.12-63,246.24-19,989.12

Finding the Fourth Proportional to 42,165.12, 63,246.24 and 19,989.12

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Solution

The fourth proportional to 42,165.12, 63,246.24 and 19,989.12 is: 29,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,165.12 : 63,246.24 = 19,989.12 : x
  2. Step 2: Convert to fraction form
    42,165.12/63,246.24 = 19,989.12/x
  3. Step 3: Cross multiply
    42,165.12x = 63,246.24 × 19,989.12
  4. Step 4: Simplify right side
    42,165.12x = 1,264,236,680.91
  5. Step 5: Solve for x
    x = 1,264,236,680.91/42,165.12
  6. Step 6: Final answer
    x = 29,983.00

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Double scale
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Similar ratio
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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.