Home / 28,144.70-42,217.12-11,504.78

Finding the Fourth Proportional to 28,144.70, 42,217.12 and 11,504.78

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Solution

The fourth proportional to 28,144.70, 42,217.12 and 11,504.78 is: 17,257.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.70 : 42,217.12 = 11,504.78 : x
  2. Step 2: Convert to fraction form
    28,144.70/42,217.12 = 11,504.78/x
  3. Step 3: Cross multiply
    28,144.70x = 42,217.12 × 11,504.78
  4. Step 4: Simplify right side
    28,144.70x = 485,698,677.83
  5. Step 5: Solve for x
    x = 485,698,677.83/28,144.70
  6. Step 6: Final answer
    x = 17,257.20

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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.