Home / 21,713.13-29,961.72-12,763.44

Finding the Fourth Proportional to 21,713.13, 29,961.72 and 12,763.44

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Solution

The fourth proportional to 21,713.13, 29,961.72 and 12,763.44 is: 17,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.13 : 29,961.72 = 12,763.44 : x
  2. Step 2: Convert to fraction form
    21,713.13/29,961.72 = 12,763.44/x
  3. Step 3: Cross multiply
    21,713.13x = 29,961.72 × 12,763.44
  4. Step 4: Simplify right side
    21,713.13x = 382,414,615.52
  5. Step 5: Solve for x
    x = 382,414,615.52/21,713.13
  6. Step 6: Final answer
    x = 17,612.14

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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.