Home / 20,065.26-27,689.29-10,990.47

Finding the Fourth Proportional to 20,065.26, 27,689.29 and 10,990.47

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Solution

The fourth proportional to 20,065.26, 27,689.29 and 10,990.47 is: 15,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.26 : 27,689.29 = 10,990.47 : x
  2. Step 2: Convert to fraction form
    20,065.26/27,689.29 = 10,990.47/x
  3. Step 3: Cross multiply
    20,065.26x = 27,689.29 × 10,990.47
  4. Step 4: Simplify right side
    20,065.26x = 304,318,387.42
  5. Step 5: Solve for x
    x = 304,318,387.42/20,065.26
  6. Step 6: Final answer
    x = 15,166.43

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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.