Home / 10,129.26-13,979.13-5,881.78

Finding the Fourth Proportional to 10,129.26, 13,979.13 and 5,881.78

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Solution

The fourth proportional to 10,129.26, 13,979.13 and 5,881.78 is: 8,117.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.26 : 13,979.13 = 5,881.78 : x
  2. Step 2: Convert to fraction form
    10,129.26/13,979.13 = 5,881.78/x
  3. Step 3: Cross multiply
    10,129.26x = 13,979.13 × 5,881.78
  4. Step 4: Simplify right side
    10,129.26x = 82,222,167.25
  5. Step 5: Solve for x
    x = 82,222,167.25/10,129.26
  6. Step 6: Final answer
    x = 8,117.29

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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.