Home / 18,989.83-28,482.38-11,874.69

Finding the Fourth Proportional to 18,989.83, 28,482.38 and 11,874.69

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Solution

The fourth proportional to 18,989.83, 28,482.38 and 11,874.69 is: 17,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.83 : 28,482.38 = 11,874.69 : x
  2. Step 2: Convert to fraction form
    18,989.83/28,482.38 = 11,874.69/x
  3. Step 3: Cross multiply
    18,989.83x = 28,482.38 × 11,874.69
  4. Step 4: Simplify right side
    18,989.83x = 338,219,371.41
  5. Step 5: Solve for x
    x = 338,219,371.41/18,989.83
  6. Step 6: Final answer
    x = 17,810.55

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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.