Home / 18,902.20-28,354.02-6,422.80

Finding the Fourth Proportional to 18,902.20, 28,354.02 and 6,422.80

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Solution

The fourth proportional to 18,902.20, 28,354.02 and 6,422.80 is: 9,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.20 : 28,354.02 = 6,422.80 : x
  2. Step 2: Convert to fraction form
    18,902.20/28,354.02 = 6,422.80/x
  3. Step 3: Cross multiply
    18,902.20x = 28,354.02 × 6,422.80
  4. Step 4: Simplify right side
    18,902.20x = 182,112,199.66
  5. Step 5: Solve for x
    x = 182,112,199.66/18,902.20
  6. Step 6: Final answer
    x = 9,634.44

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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.