Home / 28,211.82-42,318.20-13,417.75

Finding the Fourth Proportional to 28,211.82, 42,318.20 and 13,417.75

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Solution

The fourth proportional to 28,211.82, 42,318.20 and 13,417.75 is: 20,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.82 : 42,318.20 = 13,417.75 : x
  2. Step 2: Convert to fraction form
    28,211.82/42,318.20 = 13,417.75/x
  3. Step 3: Cross multiply
    28,211.82x = 42,318.20 × 13,417.75
  4. Step 4: Simplify right side
    28,211.82x = 567,815,028.05
  5. Step 5: Solve for x
    x = 567,815,028.05/28,211.82
  6. Step 6: Final answer
    x = 20,126.85

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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.