Home / 20,422.02-30,569.37-15,729.90

Finding the Fourth Proportional to 20,422.02, 30,569.37 and 15,729.90

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Solution

The fourth proportional to 20,422.02, 30,569.37 and 15,729.90 is: 23,545.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.02 : 30,569.37 = 15,729.90 : x
  2. Step 2: Convert to fraction form
    20,422.02/30,569.37 = 15,729.90/x
  3. Step 3: Cross multiply
    20,422.02x = 30,569.37 × 15,729.90
  4. Step 4: Simplify right side
    20,422.02x = 480,853,133.16
  5. Step 5: Solve for x
    x = 480,853,133.16/20,422.02
  6. Step 6: Final answer
    x = 23,545.82

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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.