Home / 10,120.80-15,176.04-3,545.04

Finding the Fourth Proportional to 10,120.80, 15,176.04 and 3,545.04

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Solution

The fourth proportional to 10,120.80, 15,176.04 and 3,545.04 is: 5,315.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.80 : 15,176.04 = 3,545.04 : x
  2. Step 2: Convert to fraction form
    10,120.80/15,176.04 = 3,545.04/x
  3. Step 3: Cross multiply
    10,120.80x = 15,176.04 × 3,545.04
  4. Step 4: Simplify right side
    10,120.80x = 53,799,668.84
  5. Step 5: Solve for x
    x = 53,799,668.84/10,120.80
  6. Step 6: Final answer
    x = 5,315.75

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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.