Home / 28,479.89-42,727.13-8,758.62

Finding the Fourth Proportional to 28,479.89, 42,727.13 and 8,758.62

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Solution

The fourth proportional to 28,479.89, 42,727.13 and 8,758.62 is: 13,140.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.89 : 42,727.13 = 8,758.62 : x
  2. Step 2: Convert to fraction form
    28,479.89/42,727.13 = 8,758.62/x
  3. Step 3: Cross multiply
    28,479.89x = 42,727.13 × 8,758.62
  4. Step 4: Simplify right side
    28,479.89x = 374,230,651.57
  5. Step 5: Solve for x
    x = 374,230,651.57/28,479.89
  6. Step 6: Final answer
    x = 13,140.17

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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.