Home / 15,705.38-21,672.62-8,630.44

Finding the Fourth Proportional to 15,705.38, 21,672.62 and 8,630.44

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Solution

The fourth proportional to 15,705.38, 21,672.62 and 8,630.44 is: 11,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.38 : 21,672.62 = 8,630.44 : x
  2. Step 2: Convert to fraction form
    15,705.38/21,672.62 = 8,630.44/x
  3. Step 3: Cross multiply
    15,705.38x = 21,672.62 × 8,630.44
  4. Step 4: Simplify right side
    15,705.38x = 187,044,095.04
  5. Step 5: Solve for x
    x = 187,044,095.04/15,705.38
  6. Step 6: Final answer
    x = 11,909.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.