Home / 27,695.28-38,219.68-15,120.32

Finding the Fourth Proportional to 27,695.28, 38,219.68 and 15,120.32

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Solution

The fourth proportional to 27,695.28, 38,219.68 and 15,120.32 is: 20,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,695.28 : 38,219.68 = 15,120.32 : x
  2. Step 2: Convert to fraction form
    27,695.28/38,219.68 = 15,120.32/x
  3. Step 3: Cross multiply
    27,695.28x = 38,219.68 × 15,120.32
  4. Step 4: Simplify right side
    27,695.28x = 577,893,791.90
  5. Step 5: Solve for x
    x = 577,893,791.90/27,695.28
  6. Step 6: Final answer
    x = 20,866.15

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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.