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Finding the Fourth Proportional to 15,997.84, 22,069.89 and 9,279.59

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Solution

The fourth proportional to 15,997.84, 22,069.89 and 9,279.59 is: 12,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,997.84 : 22,069.89 = 9,279.59 : x
  2. Step 2: Convert to fraction form
    15,997.84/22,069.89 = 9,279.59/x
  3. Step 3: Cross multiply
    15,997.84x = 22,069.89 × 9,279.59
  4. Step 4: Simplify right side
    15,997.84x = 204,799,420.20
  5. Step 5: Solve for x
    x = 204,799,420.20/15,997.84
  6. Step 6: Final answer
    x = 12,801.69

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Half scale
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Double scale
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Similar ratio
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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.