Home / 20,642.54-28,498.52-13,589.47

Finding the Fourth Proportional to 20,642.54, 28,498.52 and 13,589.47

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Solution

The fourth proportional to 20,642.54, 28,498.52 and 13,589.47 is: 18,761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.54 : 28,498.52 = 13,589.47 : x
  2. Step 2: Convert to fraction form
    20,642.54/28,498.52 = 13,589.47/x
  3. Step 3: Cross multiply
    20,642.54x = 28,498.52 × 13,589.47
  4. Step 4: Simplify right side
    20,642.54x = 387,279,782.58
  5. Step 5: Solve for x
    x = 387,279,782.58/20,642.54
  6. Step 6: Final answer
    x = 18,761.25

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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.