Home / 19,930.74-29,863.17-8,820.78

Finding the Fourth Proportional to 19,930.74, 29,863.17 and 8,820.78

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Solution

The fourth proportional to 19,930.74, 29,863.17 and 8,820.78 is: 13,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.74 : 29,863.17 = 8,820.78 : x
  2. Step 2: Convert to fraction form
    19,930.74/29,863.17 = 8,820.78/x
  3. Step 3: Cross multiply
    19,930.74x = 29,863.17 × 8,820.78
  4. Step 4: Simplify right side
    19,930.74x = 263,416,452.67
  5. Step 5: Solve for x
    x = 263,416,452.67/19,930.74
  6. Step 6: Final answer
    x = 13,216.59

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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.