Home / 12,486.42-17,201.94-8,702.70

Finding the Fourth Proportional to 12,486.42, 17,201.94 and 8,702.70

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Solution

The fourth proportional to 12,486.42, 17,201.94 and 8,702.70 is: 11,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.42 : 17,201.94 = 8,702.70 : x
  2. Step 2: Convert to fraction form
    12,486.42/17,201.94 = 8,702.70/x
  3. Step 3: Cross multiply
    12,486.42x = 17,201.94 × 8,702.70
  4. Step 4: Simplify right side
    12,486.42x = 149,703,323.24
  5. Step 5: Solve for x
    x = 149,703,323.24/12,486.42
  6. Step 6: Final answer
    x = 11,989.29

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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.