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Finding the Fourth Proportional to 14,165.70, 21,248.55 and 10,885.20

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Solution

The fourth proportional to 14,165.70, 21,248.55 and 10,885.20 is: 16,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,165.70 : 21,248.55 = 10,885.20 : x
  2. Step 2: Convert to fraction form
    14,165.70/21,248.55 = 10,885.20/x
  3. Step 3: Cross multiply
    14,165.70x = 21,248.55 × 10,885.20
  4. Step 4: Simplify right side
    14,165.70x = 231,294,716.46
  5. Step 5: Solve for x
    x = 231,294,716.46/14,165.70
  6. Step 6: Final answer
    x = 16,327.80

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Similar ratio
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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.