Home / 20,542.25-28,345.86-11,589.23

Finding the Fourth Proportional to 20,542.25, 28,345.86 and 11,589.23

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Solution

The fourth proportional to 20,542.25, 28,345.86 and 11,589.23 is: 15,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.25 : 28,345.86 = 11,589.23 : x
  2. Step 2: Convert to fraction form
    20,542.25/28,345.86 = 11,589.23/x
  3. Step 3: Cross multiply
    20,542.25x = 28,345.86 × 11,589.23
  4. Step 4: Simplify right side
    20,542.25x = 328,506,549.36
  5. Step 5: Solve for x
    x = 328,506,549.36/20,542.25
  6. Step 6: Final answer
    x = 15,991.76

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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.