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Finding the Fourth Proportional to 21,909.60, 32,867.70 and 8,057.52

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Solution

The fourth proportional to 21,909.60, 32,867.70 and 8,057.52 is: 12,087.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.60 : 32,867.70 = 8,057.52 : x
  2. Step 2: Convert to fraction form
    21,909.60/32,867.70 = 8,057.52/x
  3. Step 3: Cross multiply
    21,909.60x = 32,867.70 × 8,057.52
  4. Step 4: Simplify right side
    21,909.60x = 264,832,150.10
  5. Step 5: Solve for x
    x = 264,832,150.10/21,909.60
  6. Step 6: Final answer
    x = 12,087.49

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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.