Home / 20,132.40-30,162.15-17,216.40

Finding the Fourth Proportional to 20,132.40, 30,162.15 and 17,216.40

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Solution

The fourth proportional to 20,132.40, 30,162.15 and 17,216.40 is: 25,793.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.40 : 30,162.15 = 17,216.40 : x
  2. Step 2: Convert to fraction form
    20,132.40/30,162.15 = 17,216.40/x
  3. Step 3: Cross multiply
    20,132.40x = 30,162.15 × 17,216.40
  4. Step 4: Simplify right side
    20,132.40x = 519,283,639.26
  5. Step 5: Solve for x
    x = 519,283,639.26/20,132.40
  6. Step 6: Final answer
    x = 25,793.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.