Home / 15,010.83-20,716.20-8,297.78

Finding the Fourth Proportional to 15,010.83, 20,716.20 and 8,297.78

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Solution

The fourth proportional to 15,010.83, 20,716.20 and 8,297.78 is: 11,451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.83 : 20,716.20 = 8,297.78 : x
  2. Step 2: Convert to fraction form
    15,010.83/20,716.20 = 8,297.78/x
  3. Step 3: Cross multiply
    15,010.83x = 20,716.20 × 8,297.78
  4. Step 4: Simplify right side
    15,010.83x = 171,898,366.46
  5. Step 5: Solve for x
    x = 171,898,366.46/15,010.83
  6. Step 6: Final answer
    x = 11,451.62

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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.