Home / 26,311.50-36,339.30-20,414.70

Finding the Fourth Proportional to 26,311.50, 36,339.30 and 20,414.70

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Solution

The fourth proportional to 26,311.50, 36,339.30 and 20,414.70 is: 28,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,311.50 : 36,339.30 = 20,414.70 : x
  2. Step 2: Convert to fraction form
    26,311.50/36,339.30 = 20,414.70/x
  3. Step 3: Cross multiply
    26,311.50x = 36,339.30 × 20,414.70
  4. Step 4: Simplify right side
    26,311.50x = 741,855,907.71
  5. Step 5: Solve for x
    x = 741,855,907.71/26,311.50
  6. Step 6: Final answer
    x = 28,195.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.