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Finding the Fourth Proportional to 21,451.88, 32,177.85 and 8,965.08

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Solution

The fourth proportional to 21,451.88, 32,177.85 and 8,965.08 is: 13,447.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.88 : 32,177.85 = 8,965.08 : x
  2. Step 2: Convert to fraction form
    21,451.88/32,177.85 = 8,965.08/x
  3. Step 3: Cross multiply
    21,451.88x = 32,177.85 × 8,965.08
  4. Step 4: Simplify right side
    21,451.88x = 288,476,838.59
  5. Step 5: Solve for x
    x = 288,476,838.59/21,451.88
  6. Step 6: Final answer
    x = 13,447.63

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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.