Home / 28,218.38-42,330.40-7,441.88

Finding the Fourth Proportional to 28,218.38, 42,330.40 and 7,441.88

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Solution

The fourth proportional to 28,218.38, 42,330.40 and 7,441.88 is: 11,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.38 : 42,330.40 = 7,441.88 : x
  2. Step 2: Convert to fraction form
    28,218.38/42,330.40 = 7,441.88/x
  3. Step 3: Cross multiply
    28,218.38x = 42,330.40 × 7,441.88
  4. Step 4: Simplify right side
    28,218.38x = 315,017,526.90
  5. Step 5: Solve for x
    x = 315,017,526.90/28,218.38
  6. Step 6: Final answer
    x = 11,163.56

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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.