Home / 38,589.21-57,854.66-12,278.79

Finding the Fourth Proportional to 38,589.21, 57,854.66 and 12,278.79

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Solution

The fourth proportional to 38,589.21, 57,854.66 and 12,278.79 is: 18,408.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,589.21 : 57,854.66 = 12,278.79 : x
  2. Step 2: Convert to fraction form
    38,589.21/57,854.66 = 12,278.79/x
  3. Step 3: Cross multiply
    38,589.21x = 57,854.66 × 12,278.79
  4. Step 4: Simplify right side
    38,589.21x = 710,385,159.27
  5. Step 5: Solve for x
    x = 710,385,159.27/38,589.21
  6. Step 6: Final answer
    x = 18,408.91

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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.