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Finding the Fourth Proportional to 15,059.14, 20,781.63 and 8,344.70

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Solution

The fourth proportional to 15,059.14, 20,781.63 and 8,344.70 is: 11,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.14 : 20,781.63 = 8,344.70 : x
  2. Step 2: Convert to fraction form
    15,059.14/20,781.63 = 8,344.70/x
  3. Step 3: Cross multiply
    15,059.14x = 20,781.63 × 8,344.70
  4. Step 4: Simplify right side
    15,059.14x = 173,416,467.86
  5. Step 5: Solve for x
    x = 173,416,467.86/15,059.14
  6. Step 6: Final answer
    x = 11,515.70

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Half 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.