Home / 10,885.70-16,328.55-9,136.10

Finding the Fourth Proportional to 10,885.70, 16,328.55 and 9,136.10

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Solution

The fourth proportional to 10,885.70, 16,328.55 and 9,136.10 is: 13,704.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.70 : 16,328.55 = 9,136.10 : x
  2. Step 2: Convert to fraction form
    10,885.70/16,328.55 = 9,136.10/x
  3. Step 3: Cross multiply
    10,885.70x = 16,328.55 × 9,136.10
  4. Step 4: Simplify right side
    10,885.70x = 149,179,265.66
  5. Step 5: Solve for x
    x = 149,179,265.66/10,885.70
  6. Step 6: Final answer
    x = 13,704.15

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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.