Home / 27,717.40-38,248.82-15,142.20

Finding the Fourth Proportional to 27,717.40, 38,248.82 and 15,142.20

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Solution

The fourth proportional to 27,717.40, 38,248.82 and 15,142.20 is: 20,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,717.40 : 38,248.82 = 15,142.20 : x
  2. Step 2: Convert to fraction form
    27,717.40/38,248.82 = 15,142.20/x
  3. Step 3: Cross multiply
    27,717.40x = 38,248.82 × 15,142.20
  4. Step 4: Simplify right side
    27,717.40x = 579,171,282.20
  5. Step 5: Solve for x
    x = 579,171,282.20/27,717.40
  6. Step 6: Final answer
    x = 20,895.58

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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.