Home / 27,728.30-38,263.92-15,152.78

Finding the Fourth Proportional to 27,728.30, 38,263.92 and 15,152.78

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Solution

The fourth proportional to 27,728.30, 38,263.92 and 15,152.78 is: 20,910.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.30 : 38,263.92 = 15,152.78 : x
  2. Step 2: Convert to fraction form
    27,728.30/38,263.92 = 15,152.78/x
  3. Step 3: Cross multiply
    27,728.30x = 38,263.92 × 15,152.78
  4. Step 4: Simplify right side
    27,728.30x = 579,804,761.70
  5. Step 5: Solve for x
    x = 579,804,761.70/27,728.30
  6. Step 6: Final answer
    x = 20,910.22

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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.