Home / 10,885.20-16,327.80-7,933.20

Finding the Fourth Proportional to 10,885.20, 16,327.80 and 7,933.20

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Solution

The fourth proportional to 10,885.20, 16,327.80 and 7,933.20 is: 11,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.20 : 16,327.80 = 7,933.20 : x
  2. Step 2: Convert to fraction form
    10,885.20/16,327.80 = 7,933.20/x
  3. Step 3: Cross multiply
    10,885.20x = 16,327.80 × 7,933.20
  4. Step 4: Simplify right side
    10,885.20x = 129,531,702.96
  5. Step 5: Solve for x
    x = 129,531,702.96/10,885.20
  6. Step 6: Final answer
    x = 11,899.80

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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.