Home / 20,083.25-27,711.75-11,585.70

Finding the Fourth Proportional to 20,083.25, 27,711.75 and 11,585.70

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Solution

The fourth proportional to 20,083.25, 27,711.75 and 11,585.70 is: 15,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.25 : 27,711.75 = 11,585.70 : x
  2. Step 2: Convert to fraction form
    20,083.25/27,711.75 = 11,585.70/x
  3. Step 3: Cross multiply
    20,083.25x = 27,711.75 × 11,585.70
  4. Step 4: Simplify right side
    20,083.25x = 321,060,065.42
  5. Step 5: Solve for x
    x = 321,060,065.42/20,083.25
  6. Step 6: Final answer
    x = 15,986.46

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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.