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Finding the Fourth Proportional to 12,880.71, 19,321.07 and 7,034.13

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Solution

The fourth proportional to 12,880.71, 19,321.07 and 7,034.13 is: 10,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.71 : 19,321.07 = 7,034.13 : x
  2. Step 2: Convert to fraction form
    12,880.71/19,321.07 = 7,034.13/x
  3. Step 3: Cross multiply
    12,880.71x = 19,321.07 × 7,034.13
  4. Step 4: Simplify right side
    12,880.71x = 135,906,882.95
  5. Step 5: Solve for x
    x = 135,906,882.95/12,880.71
  6. Step 6: Final answer
    x = 10,551.20

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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.