Home / 27,787.86-38,348.15-15,212.61

Finding the Fourth Proportional to 27,787.86, 38,348.15 and 15,212.61

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Solution

The fourth proportional to 27,787.86, 38,348.15 and 15,212.61 is: 20,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.86 : 38,348.15 = 15,212.61 : x
  2. Step 2: Convert to fraction form
    27,787.86/38,348.15 = 15,212.61/x
  3. Step 3: Cross multiply
    27,787.86x = 38,348.15 × 15,212.61
  4. Step 4: Simplify right side
    27,787.86x = 583,375,374.11
  5. Step 5: Solve for x
    x = 583,375,374.11/27,787.86
  6. Step 6: Final answer
    x = 20,993.89

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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.