Home / 20,375.02-28,117.28-11,422.52

Finding the Fourth Proportional to 20,375.02, 28,117.28 and 11,422.52

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Solution

The fourth proportional to 20,375.02, 28,117.28 and 11,422.52 is: 15,762.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.02 : 28,117.28 = 11,422.52 : x
  2. Step 2: Convert to fraction form
    20,375.02/28,117.28 = 11,422.52/x
  3. Step 3: Cross multiply
    20,375.02x = 28,117.28 × 11,422.52
  4. Step 4: Simplify right side
    20,375.02x = 321,170,193.15
  5. Step 5: Solve for x
    x = 321,170,193.15/20,375.02
  6. Step 6: Final answer
    x = 15,762.94

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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.