Home / 27,921.20-38,531.04-15,345.92

Finding the Fourth Proportional to 27,921.20, 38,531.04 and 15,345.92

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Solution

The fourth proportional to 27,921.20, 38,531.04 and 15,345.92 is: 21,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.20 : 38,531.04 = 15,345.92 : x
  2. Step 2: Convert to fraction form
    27,921.20/38,531.04 = 15,345.92/x
  3. Step 3: Cross multiply
    27,921.20x = 38,531.04 × 15,345.92
  4. Step 4: Simplify right side
    27,921.20x = 591,294,257.36
  5. Step 5: Solve for x
    x = 591,294,257.36/27,921.20
  6. Step 6: Final answer
    x = 21,177.25

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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.