Home / 28,126.78-42,190.17-8,404.70

Finding the Fourth Proportional to 28,126.78, 42,190.17 and 8,404.70

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Solution

The fourth proportional to 28,126.78, 42,190.17 and 8,404.70 is: 12,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.78 : 42,190.17 = 8,404.70 : x
  2. Step 2: Convert to fraction form
    28,126.78/42,190.17 = 8,404.70/x
  3. Step 3: Cross multiply
    28,126.78x = 42,190.17 × 8,404.70
  4. Step 4: Simplify right side
    28,126.78x = 354,595,479.33
  5. Step 5: Solve for x
    x = 354,595,479.33/28,126.78
  6. Step 6: Final answer
    x = 12,607.04

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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.