Home / 42,281.92-63,428.10-13,818.20

Finding the Fourth Proportional to 42,281.92, 63,428.10 and 13,818.20

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Solution

The fourth proportional to 42,281.92, 63,428.10 and 13,818.20 is: 20,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,281.92 : 63,428.10 = 13,818.20 : x
  2. Step 2: Convert to fraction form
    42,281.92/63,428.10 = 13,818.20/x
  3. Step 3: Cross multiply
    42,281.92x = 63,428.10 × 13,818.20
  4. Step 4: Simplify right side
    42,281.92x = 876,462,171.42
  5. Step 5: Solve for x
    x = 876,462,171.42/42,281.92
  6. Step 6: Final answer
    x = 20,729.01

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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.