Home / 20,600.68-28,428.88-11,169.24

Finding the Fourth Proportional to 20,600.68, 28,428.88 and 11,169.24

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Solution

The fourth proportional to 20,600.68, 28,428.88 and 11,169.24 is: 15,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.68 : 28,428.88 = 11,169.24 : x
  2. Step 2: Convert to fraction form
    20,600.68/28,428.88 = 11,169.24/x
  3. Step 3: Cross multiply
    20,600.68x = 28,428.88 × 11,169.24
  4. Step 4: Simplify right side
    20,600.68x = 317,528,983.65
  5. Step 5: Solve for x
    x = 317,528,983.65/20,600.68
  6. Step 6: Final answer
    x = 15,413.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.