Home / 27,788.18-38,348.14-15,689.30

Finding the Fourth Proportional to 27,788.18, 38,348.14 and 15,689.30

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Solution

The fourth proportional to 27,788.18, 38,348.14 and 15,689.30 is: 21,651.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,788.18 : 38,348.14 = 15,689.30 : x
  2. Step 2: Convert to fraction form
    27,788.18/38,348.14 = 15,689.30/x
  3. Step 3: Cross multiply
    27,788.18x = 38,348.14 × 15,689.30
  4. Step 4: Simplify right side
    27,788.18x = 601,655,472.90
  5. Step 5: Solve for x
    x = 601,655,472.90/27,788.18
  6. Step 6: Final answer
    x = 21,651.49

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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.