Home / 18,845.70-28,279.35-7,167.30

Finding the Fourth Proportional to 18,845.70, 28,279.35 and 7,167.30

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Solution

The fourth proportional to 18,845.70, 28,279.35 and 7,167.30 is: 10,755.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.70 : 28,279.35 = 7,167.30 : x
  2. Step 2: Convert to fraction form
    18,845.70/28,279.35 = 7,167.30/x
  3. Step 3: Cross multiply
    18,845.70x = 28,279.35 × 7,167.30
  4. Step 4: Simplify right side
    18,845.70x = 202,686,585.26
  5. Step 5: Solve for x
    x = 202,686,585.26/18,845.70
  6. Step 6: Final answer
    x = 10,755.06

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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.