Home / 18,857.88-28,290.45-7,170.18

Finding the Fourth Proportional to 18,857.88, 28,290.45 and 7,170.18

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Solution

The fourth proportional to 18,857.88, 28,290.45 and 7,170.18 is: 10,756.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.88 : 28,290.45 = 7,170.18 : x
  2. Step 2: Convert to fraction form
    18,857.88/28,290.45 = 7,170.18/x
  3. Step 3: Cross multiply
    18,857.88x = 28,290.45 × 7,170.18
  4. Step 4: Simplify right side
    18,857.88x = 202,847,618.78
  5. Step 5: Solve for x
    x = 202,847,618.78/18,857.88
  6. Step 6: Final answer
    x = 10,756.65

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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.