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Finding the Fourth Proportional to 22,659.60, 33,981.32 and 8,615.90

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Solution

The fourth proportional to 22,659.60, 33,981.32 and 8,615.90 is: 12,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,659.60 : 33,981.32 = 8,615.90 : x
  2. Step 2: Convert to fraction form
    22,659.60/33,981.32 = 8,615.90/x
  3. Step 3: Cross multiply
    22,659.60x = 33,981.32 × 8,615.90
  4. Step 4: Simplify right side
    22,659.60x = 292,779,442.00
  5. Step 5: Solve for x
    x = 292,779,442.00/22,659.60
  6. Step 6: Final answer
    x = 12,920.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.