Home / 42,639.03-63,960.17-11,475.09

Finding the Fourth Proportional to 42,639.03, 63,960.17 and 11,475.09

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Solution

The fourth proportional to 42,639.03, 63,960.17 and 11,475.09 is: 17,213.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,639.03 : 63,960.17 = 11,475.09 : x
  2. Step 2: Convert to fraction form
    42,639.03/63,960.17 = 11,475.09/x
  3. Step 3: Cross multiply
    42,639.03x = 63,960.17 × 11,475.09
  4. Step 4: Simplify right side
    42,639.03x = 733,948,649.79
  5. Step 5: Solve for x
    x = 733,948,649.79/42,639.03
  6. Step 6: Final answer
    x = 17,213.07

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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.