Home / 18,988.43-28,482.57-5,137.43

Finding the Fourth Proportional to 18,988.43, 28,482.57 and 5,137.43

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Solution

The fourth proportional to 18,988.43, 28,482.57 and 5,137.43 is: 7,706.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.43 : 28,482.57 = 5,137.43 : x
  2. Step 2: Convert to fraction form
    18,988.43/28,482.57 = 5,137.43/x
  3. Step 3: Cross multiply
    18,988.43x = 28,482.57 × 5,137.43
  4. Step 4: Simplify right side
    18,988.43x = 146,327,067.18
  5. Step 5: Solve for x
    x = 146,327,067.18/18,988.43
  6. Step 6: Final answer
    x = 7,706.12

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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.