Home / 18,775.42-28,171.33-7,085.90

Finding the Fourth Proportional to 18,775.42, 28,171.33 and 7,085.90

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Solution

The fourth proportional to 18,775.42, 28,171.33 and 7,085.90 is: 10,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.42 : 28,171.33 = 7,085.90 : x
  2. Step 2: Convert to fraction form
    18,775.42/28,171.33 = 7,085.90/x
  3. Step 3: Cross multiply
    18,775.42x = 28,171.33 × 7,085.90
  4. Step 4: Simplify right side
    18,775.42x = 199,619,279.96
  5. Step 5: Solve for x
    x = 199,619,279.96/18,775.42
  6. Step 6: Final answer
    x = 10,631.95

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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.