Home / 20,454.06-28,217.79-12,894.42

Finding the Fourth Proportional to 20,454.06, 28,217.79 and 12,894.42

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Solution

The fourth proportional to 20,454.06, 28,217.79 and 12,894.42 is: 17,788.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.06 : 28,217.79 = 12,894.42 : x
  2. Step 2: Convert to fraction form
    20,454.06/28,217.79 = 12,894.42/x
  3. Step 3: Cross multiply
    20,454.06x = 28,217.79 × 12,894.42
  4. Step 4: Simplify right side
    20,454.06x = 363,852,035.73
  5. Step 5: Solve for x
    x = 363,852,035.73/20,454.06
  6. Step 6: Final answer
    x = 17,788.74

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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.