Home / 20,077.90-27,711.38-11,585.52

Finding the Fourth Proportional to 20,077.90, 27,711.38 and 11,585.52

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Solution

The fourth proportional to 20,077.90, 27,711.38 and 11,585.52 is: 15,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.90 : 27,711.38 = 11,585.52 : x
  2. Step 2: Convert to fraction form
    20,077.90/27,711.38 = 11,585.52/x
  3. Step 3: Cross multiply
    20,077.90x = 27,711.38 × 11,585.52
  4. Step 4: Simplify right side
    20,077.90x = 321,050,747.22
  5. Step 5: Solve for x
    x = 321,050,747.22/20,077.90
  6. Step 6: Final answer
    x = 15,990.26

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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.