Home / 26,142.70-39,220.12-8,612.68

Finding the Fourth Proportional to 26,142.70, 39,220.12 and 8,612.68

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Solution

The fourth proportional to 26,142.70, 39,220.12 and 8,612.68 is: 12,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,142.70 : 39,220.12 = 8,612.68 : x
  2. Step 2: Convert to fraction form
    26,142.70/39,220.12 = 8,612.68/x
  3. Step 3: Cross multiply
    26,142.70x = 39,220.12 × 8,612.68
  4. Step 4: Simplify right side
    26,142.70x = 337,790,343.12
  5. Step 5: Solve for x
    x = 337,790,343.12/26,142.70
  6. Step 6: Final answer
    x = 12,921.02

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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.