Home / 20,642.33-28,498.23-13,589.25

Finding the Fourth Proportional to 20,642.33, 28,498.23 and 13,589.25

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Solution

The fourth proportional to 20,642.33, 28,498.23 and 13,589.25 is: 18,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.33 : 28,498.23 = 13,589.25 : x
  2. Step 2: Convert to fraction form
    20,642.33/28,498.23 = 13,589.25/x
  3. Step 3: Cross multiply
    20,642.33x = 28,498.23 × 13,589.25
  4. Step 4: Simplify right side
    20,642.33x = 387,269,572.03
  5. Step 5: Solve for x
    x = 387,269,572.03/20,642.33
  6. Step 6: Final answer
    x = 18,760.95

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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.