Home / 28,126.76-42,190.18-11,486.79

Finding the Fourth Proportional to 28,126.76, 42,190.18 and 11,486.79

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Solution

The fourth proportional to 28,126.76, 42,190.18 and 11,486.79 is: 17,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.76 : 42,190.18 = 11,486.79 : x
  2. Step 2: Convert to fraction form
    28,126.76/42,190.18 = 11,486.79/x
  3. Step 3: Cross multiply
    28,126.76x = 42,190.18 × 11,486.79
  4. Step 4: Simplify right side
    28,126.76x = 484,629,737.72
  5. Step 5: Solve for x
    x = 484,629,737.72/28,126.76
  6. Step 6: Final answer
    x = 17,230.20

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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.