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Finding the Fourth Proportional to 15,002.60, 20,701.80 and 8,287.82

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Solution

The fourth proportional to 15,002.60, 20,701.80 and 8,287.82 is: 11,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.60 : 20,701.80 = 8,287.82 : x
  2. Step 2: Convert to fraction form
    15,002.60/20,701.80 = 8,287.82/x
  3. Step 3: Cross multiply
    15,002.60x = 20,701.80 × 8,287.82
  4. Step 4: Simplify right side
    15,002.60x = 171,572,792.08
  5. Step 5: Solve for x
    x = 171,572,792.08/15,002.60
  6. Step 6: Final answer
    x = 11,436.20

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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.