Home / 9,105.40-13,658.10-8,975.80

Finding the Fourth Proportional to 9,105.40, 13,658.10 and 8,975.80

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Solution

The fourth proportional to 9,105.40, 13,658.10 and 8,975.80 is: 13,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.40 : 13,658.10 = 8,975.80 : x
  2. Step 2: Convert to fraction form
    9,105.40/13,658.10 = 8,975.80/x
  3. Step 3: Cross multiply
    9,105.40x = 13,658.10 × 8,975.80
  4. Step 4: Simplify right side
    9,105.40x = 122,592,373.98
  5. Step 5: Solve for x
    x = 122,592,373.98/9,105.40
  6. Step 6: Final answer
    x = 13,463.70

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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.