Home / 42,020.46-63,008.76-12,434.28

Finding the Fourth Proportional to 42,020.46, 63,008.76 and 12,434.28

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Solution

The fourth proportional to 42,020.46, 63,008.76 and 12,434.28 is: 18,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.46 : 63,008.76 = 12,434.28 : x
  2. Step 2: Convert to fraction form
    42,020.46/63,008.76 = 12,434.28/x
  3. Step 3: Cross multiply
    42,020.46x = 63,008.76 × 12,434.28
  4. Step 4: Simplify right side
    42,020.46x = 783,468,564.29
  5. Step 5: Solve for x
    x = 783,468,564.29/42,020.46
  6. Step 6: Final answer
    x = 18,644.93

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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.