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Finding the Fourth Proportional to 15,213.52, 20,994.62 and 8,589.52

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Solution

The fourth proportional to 15,213.52, 20,994.62 and 8,589.52 is: 11,853.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.52 : 20,994.62 = 8,589.52 : x
  2. Step 2: Convert to fraction form
    15,213.52/20,994.62 = 8,589.52/x
  3. Step 3: Cross multiply
    15,213.52x = 20,994.62 × 8,589.52
  4. Step 4: Simplify right side
    15,213.52x = 180,333,708.38
  5. Step 5: Solve for x
    x = 180,333,708.38/15,213.52
  6. Step 6: Final answer
    x = 11,853.52

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Half scale
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Double scale
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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.