Home / 28,144.38-42,221.68-9,422.58

Finding the Fourth Proportional to 28,144.38, 42,221.68 and 9,422.58

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Solution

The fourth proportional to 28,144.38, 42,221.68 and 9,422.58 is: 14,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.38 : 42,221.68 = 9,422.58 : x
  2. Step 2: Convert to fraction form
    28,144.38/42,221.68 = 9,422.58/x
  3. Step 3: Cross multiply
    28,144.38x = 42,221.68 × 9,422.58
  4. Step 4: Simplify right side
    28,144.38x = 397,837,157.53
  5. Step 5: Solve for x
    x = 397,837,157.53/28,144.38
  6. Step 6: Final answer
    x = 14,135.58

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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.