Home / 13,330.59-18,394.11-7,665.66

Finding the Fourth Proportional to 13,330.59, 18,394.11 and 7,665.66

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Solution

The fourth proportional to 13,330.59, 18,394.11 and 7,665.66 is: 10,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.59 : 18,394.11 = 7,665.66 : x
  2. Step 2: Convert to fraction form
    13,330.59/18,394.11 = 7,665.66/x
  3. Step 3: Cross multiply
    13,330.59x = 18,394.11 × 7,665.66
  4. Step 4: Simplify right side
    13,330.59x = 141,002,993.26
  5. Step 5: Solve for x
    x = 141,002,993.26/13,330.59
  6. Step 6: Final answer
    x = 10,577.40

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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.