Home / 20,600.44-28,428.65-11,168.94

Finding the Fourth Proportional to 20,600.44, 28,428.65 and 11,168.94

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Solution

The fourth proportional to 20,600.44, 28,428.65 and 11,168.94 is: 15,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.44 : 28,428.65 = 11,168.94 : x
  2. Step 2: Convert to fraction form
    20,600.44/28,428.65 = 11,168.94/x
  3. Step 3: Cross multiply
    20,600.44x = 28,428.65 × 11,168.94
  4. Step 4: Simplify right side
    20,600.44x = 317,517,886.13
  5. Step 5: Solve for x
    x = 317,517,886.13/20,600.44
  6. Step 6: Final answer
    x = 15,413.16

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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.