Home / 12,711.25-17,531.12-8,946.87

Finding the Fourth Proportional to 12,711.25, 17,531.12 and 8,946.87

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Solution

The fourth proportional to 12,711.25, 17,531.12 and 8,946.87 is: 12,339.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.25 : 17,531.12 = 8,946.87 : x
  2. Step 2: Convert to fraction form
    12,711.25/17,531.12 = 8,946.87/x
  3. Step 3: Cross multiply
    12,711.25x = 17,531.12 × 8,946.87
  4. Step 4: Simplify right side
    12,711.25x = 156,848,739.70
  5. Step 5: Solve for x
    x = 156,848,739.70/12,711.25
  6. Step 6: Final answer
    x = 12,339.37

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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.