Home / 12,702.20-17,522.97-8,455.22

Finding the Fourth Proportional to 12,702.20, 17,522.97 and 8,455.22

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Solution

The fourth proportional to 12,702.20, 17,522.97 and 8,455.22 is: 11,664.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.20 : 17,522.97 = 8,455.22 : x
  2. Step 2: Convert to fraction form
    12,702.20/17,522.97 = 8,455.22/x
  3. Step 3: Cross multiply
    12,702.20x = 17,522.97 × 8,455.22
  4. Step 4: Simplify right side
    12,702.20x = 148,160,566.40
  5. Step 5: Solve for x
    x = 148,160,566.40/12,702.20
  6. Step 6: Final answer
    x = 11,664.17

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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.