Home / 12,326.13-18,489.20-7,389.59

Finding the Fourth Proportional to 12,326.13, 18,489.20 and 7,389.59

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Solution

The fourth proportional to 12,326.13, 18,489.20 and 7,389.59 is: 11,084.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326.13 : 18,489.20 = 7,389.59 : x
  2. Step 2: Convert to fraction form
    12,326.13/18,489.20 = 7,389.59/x
  3. Step 3: Cross multiply
    12,326.13x = 18,489.20 × 7,389.59
  4. Step 4: Simplify right side
    12,326.13x = 136,627,478.03
  5. Step 5: Solve for x
    x = 136,627,478.03/12,326.13
  6. Step 6: Final answer
    x = 11,084.38

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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.