Home / 13,331.01-18,400.36-7,666.38

Finding the Fourth Proportional to 13,331.01, 18,400.36 and 7,666.38

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Solution

The fourth proportional to 13,331.01, 18,400.36 and 7,666.38 is: 10,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.01 : 18,400.36 = 7,666.38 : x
  2. Step 2: Convert to fraction form
    13,331.01/18,400.36 = 7,666.38/x
  3. Step 3: Cross multiply
    13,331.01x = 18,400.36 × 7,666.38
  4. Step 4: Simplify right side
    13,331.01x = 141,064,132.73
  5. Step 5: Solve for x
    x = 141,064,132.73/13,331.01
  6. Step 6: Final answer
    x = 10,581.65

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.