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Finding the Fourth Proportional to 8,831.69, 13,295.25 and 8,068.97

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Solution

The fourth proportional to 8,831.69, 13,295.25 and 8,068.97 is: 12,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,831.69 : 13,295.25 = 8,068.97 : x
  2. Step 2: Convert to fraction form
    8,831.69/13,295.25 = 8,068.97/x
  3. Step 3: Cross multiply
    8,831.69x = 13,295.25 × 8,068.97
  4. Step 4: Simplify right side
    8,831.69x = 107,278,973.39
  5. Step 5: Solve for x
    x = 107,278,973.39/8,831.69
  6. Step 6: Final answer
    x = 12,147.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.