Home / 10,903.90-16,319.40-9,591.70

Finding the Fourth Proportional to 10,903.90, 16,319.40 and 9,591.70

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Solution

The fourth proportional to 10,903.90, 16,319.40 and 9,591.70 is: 14,355.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.90 : 16,319.40 = 9,591.70 : x
  2. Step 2: Convert to fraction form
    10,903.90/16,319.40 = 9,591.70/x
  3. Step 3: Cross multiply
    10,903.90x = 16,319.40 × 9,591.70
  4. Step 4: Simplify right side
    10,903.90x = 156,530,788.98
  5. Step 5: Solve for x
    x = 156,530,788.98/10,903.90
  6. Step 6: Final answer
    x = 14,355.49

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Double scale
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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.