Home / 10,887.80-16,331.70-7,388.60

Finding the Fourth Proportional to 10,887.80, 16,331.70 and 7,388.60

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Solution

The fourth proportional to 10,887.80, 16,331.70 and 7,388.60 is: 11,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.80 : 16,331.70 = 7,388.60 : x
  2. Step 2: Convert to fraction form
    10,887.80/16,331.70 = 7,388.60/x
  3. Step 3: Cross multiply
    10,887.80x = 16,331.70 × 7,388.60
  4. Step 4: Simplify right side
    10,887.80x = 120,668,398.62
  5. Step 5: Solve for x
    x = 120,668,398.62/10,887.80
  6. Step 6: Final answer
    x = 11,082.90

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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.