Home / 22,538.32-31,104.06-12,979.65

Finding the Fourth Proportional to 22,538.32, 31,104.06 and 12,979.65

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Solution

The fourth proportional to 22,538.32, 31,104.06 and 12,979.65 is: 17,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,538.32 : 31,104.06 = 12,979.65 : x
  2. Step 2: Convert to fraction form
    22,538.32/31,104.06 = 12,979.65/x
  3. Step 3: Cross multiply
    22,538.32x = 31,104.06 × 12,979.65
  4. Step 4: Simplify right side
    22,538.32x = 403,719,812.38
  5. Step 5: Solve for x
    x = 403,719,812.38/22,538.32
  6. Step 6: Final answer
    x = 17,912.60

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Double scale
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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.