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Finding the Fourth Proportional to 21,937.60, 32,906.40 and 14,939.20

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Solution

The fourth proportional to 21,937.60, 32,906.40 and 14,939.20 is: 22,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.60 : 32,906.40 = 14,939.20 : x
  2. Step 2: Convert to fraction form
    21,937.60/32,906.40 = 14,939.20/x
  3. Step 3: Cross multiply
    21,937.60x = 32,906.40 × 14,939.20
  4. Step 4: Simplify right side
    21,937.60x = 491,595,290.88
  5. Step 5: Solve for x
    x = 491,595,290.88/21,937.60
  6. Step 6: Final answer
    x = 22,408.80

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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.