Home / 13,516.16-20,287.19-7,677.68

Finding the Fourth Proportional to 13,516.16, 20,287.19 and 7,677.68

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Solution

The fourth proportional to 13,516.16, 20,287.19 and 7,677.68 is: 11,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.16 : 20,287.19 = 7,677.68 : x
  2. Step 2: Convert to fraction form
    13,516.16/20,287.19 = 7,677.68/x
  3. Step 3: Cross multiply
    13,516.16x = 20,287.19 × 7,677.68
  4. Step 4: Simplify right side
    13,516.16x = 155,758,413.09
  5. Step 5: Solve for x
    x = 155,758,413.09/13,516.16
  6. Step 6: Final answer
    x = 11,523.87

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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.