Home / 9,337.19-12,847.56-9,115.70

Finding the Fourth Proportional to 9,337.19, 12,847.56 and 9,115.70

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Solution

The fourth proportional to 9,337.19, 12,847.56 and 9,115.70 is: 12,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,337.19 : 12,847.56 = 9,115.70 : x
  2. Step 2: Convert to fraction form
    9,337.19/12,847.56 = 9,115.70/x
  3. Step 3: Cross multiply
    9,337.19x = 12,847.56 × 9,115.70
  4. Step 4: Simplify right side
    9,337.19x = 117,114,502.69
  5. Step 5: Solve for x
    x = 117,114,502.69/9,337.19
  6. Step 6: Final answer
    x = 12,542.80

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Half scale
Find fourth proportional to 18,674.38, 25,695.12 and 18,231.40
Double scale
Find fourth proportional to 9,338.19, 12,848.94 and 9,116.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.