Home / 20,894.32-31,342.73-8,414.29

Finding the Fourth Proportional to 20,894.32, 31,342.73 and 8,414.29

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Solution

The fourth proportional to 20,894.32, 31,342.73 and 8,414.29 is: 12,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.32 : 31,342.73 = 8,414.29 : x
  2. Step 2: Convert to fraction form
    20,894.32/31,342.73 = 8,414.29/x
  3. Step 3: Cross multiply
    20,894.32x = 31,342.73 × 8,414.29
  4. Step 4: Simplify right side
    20,894.32x = 263,726,819.61
  5. Step 5: Solve for x
    x = 263,726,819.61/20,894.32
  6. Step 6: Final answer
    x = 12,621.94

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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.