Home / 18,427.50-27,641.16-5,279.85

Finding the Fourth Proportional to 18,427.50, 27,641.16 and 5,279.85

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Solution

The fourth proportional to 18,427.50, 27,641.16 and 5,279.85 is: 7,919.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.50 : 27,641.16 = 5,279.85 : x
  2. Step 2: Convert to fraction form
    18,427.50/27,641.16 = 5,279.85/x
  3. Step 3: Cross multiply
    18,427.50x = 27,641.16 × 5,279.85
  4. Step 4: Simplify right side
    18,427.50x = 145,941,178.63
  5. Step 5: Solve for x
    x = 145,941,178.63/18,427.50
  6. Step 6: Final answer
    x = 7,919.75

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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.