Home / 28,508-39,341.04-15,932.76

Finding the Fourth Proportional to 28,508, 39,341.04 and 15,932.76

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Solution

The fourth proportional to 28,508, 39,341.04 and 15,932.76 is: 21,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508 : 39,341.04 = 15,932.76 : x
  2. Step 2: Convert to fraction form
    28,508/39,341.04 = 15,932.76/x
  3. Step 3: Cross multiply
    28,508x = 39,341.04 × 15,932.76
  4. Step 4: Simplify right side
    28,508x = 626,811,348.47
  5. Step 5: Solve for x
    x = 626,811,348.47/28,508
  6. Step 6: Final answer
    x = 21,987.21

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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.