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Finding the Fourth Proportional to 8,969.14, 13,439.12 and 7,110.20

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Solution

The fourth proportional to 8,969.14, 13,439.12 and 7,110.20 is: 10,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.14 : 13,439.12 = 7,110.20 : x
  2. Step 2: Convert to fraction form
    8,969.14/13,439.12 = 7,110.20/x
  3. Step 3: Cross multiply
    8,969.14x = 13,439.12 × 7,110.20
  4. Step 4: Simplify right side
    8,969.14x = 95,554,831.02
  5. Step 5: Solve for x
    x = 95,554,831.02/8,969.14
  6. Step 6: Final answer
    x = 10,653.73

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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.