Home / 27,717.12-38,248.20-15,139.44

Finding the Fourth Proportional to 27,717.12, 38,248.20 and 15,139.44

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Solution

The fourth proportional to 27,717.12, 38,248.20 and 15,139.44 is: 20,891.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,717.12 : 38,248.20 = 15,139.44 : x
  2. Step 2: Convert to fraction form
    27,717.12/38,248.20 = 15,139.44/x
  3. Step 3: Cross multiply
    27,717.12x = 38,248.20 × 15,139.44
  4. Step 4: Simplify right side
    27,717.12x = 579,056,329.01
  5. Step 5: Solve for x
    x = 579,056,329.01/27,717.12
  6. Step 6: Final answer
    x = 20,891.65

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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.