Home / 21,187.06-31,788.95-8,042.92

Finding the Fourth Proportional to 21,187.06, 31,788.95 and 8,042.92

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Solution

The fourth proportional to 21,187.06, 31,788.95 and 8,042.92 is: 12,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.06 : 31,788.95 = 8,042.92 : x
  2. Step 2: Convert to fraction form
    21,187.06/31,788.95 = 8,042.92/x
  3. Step 3: Cross multiply
    21,187.06x = 31,788.95 × 8,042.92
  4. Step 4: Simplify right side
    21,187.06x = 255,675,981.73
  5. Step 5: Solve for x
    x = 255,675,981.73/21,187.06
  6. Step 6: Final answer
    x = 12,067.55

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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.