Home / 18,678.25-28,017.33-5,531.65

Finding the Fourth Proportional to 18,678.25, 28,017.33 and 5,531.65

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Solution

The fourth proportional to 18,678.25, 28,017.33 and 5,531.65 is: 8,297.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.25 : 28,017.33 = 5,531.65 : x
  2. Step 2: Convert to fraction form
    18,678.25/28,017.33 = 5,531.65/x
  3. Step 3: Cross multiply
    18,678.25x = 28,017.33 × 5,531.65
  4. Step 4: Simplify right side
    18,678.25x = 154,981,972.71
  5. Step 5: Solve for x
    x = 154,981,972.71/18,678.25
  6. Step 6: Final answer
    x = 8,297.46

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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.