Home / 20,542.47-28,348.14-11,589.76

Finding the Fourth Proportional to 20,542.47, 28,348.14 and 11,589.76

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Solution

The fourth proportional to 20,542.47, 28,348.14 and 11,589.76 is: 15,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.47 : 28,348.14 = 11,589.76 : x
  2. Step 2: Convert to fraction form
    20,542.47/28,348.14 = 11,589.76/x
  3. Step 3: Cross multiply
    20,542.47x = 28,348.14 × 11,589.76
  4. Step 4: Simplify right side
    20,542.47x = 328,548,139.05
  5. Step 5: Solve for x
    x = 328,548,139.05/20,542.47
  6. Step 6: Final answer
    x = 15,993.60

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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.