Home / 42,473.92-63,721.14-12,890.02

Finding the Fourth Proportional to 42,473.92, 63,721.14 and 12,890.02

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Solution

The fourth proportional to 42,473.92, 63,721.14 and 12,890.02 is: 19,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,473.92 : 63,721.14 = 12,890.02 : x
  2. Step 2: Convert to fraction form
    42,473.92/63,721.14 = 12,890.02/x
  3. Step 3: Cross multiply
    42,473.92x = 63,721.14 × 12,890.02
  4. Step 4: Simplify right side
    42,473.92x = 821,366,769.02
  5. Step 5: Solve for x
    x = 821,366,769.02/42,473.92
  6. Step 6: Final answer
    x = 19,338.14

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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.