Home / 19,755.24-27,259.62-12,691.20

Finding the Fourth Proportional to 19,755.24, 27,259.62 and 12,691.20

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Solution

The fourth proportional to 19,755.24, 27,259.62 and 12,691.20 is: 17,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.24 : 27,259.62 = 12,691.20 : x
  2. Step 2: Convert to fraction form
    19,755.24/27,259.62 = 12,691.20/x
  3. Step 3: Cross multiply
    19,755.24x = 27,259.62 × 12,691.20
  4. Step 4: Simplify right side
    19,755.24x = 345,957,289.34
  5. Step 5: Solve for x
    x = 345,957,289.34/19,755.24
  6. Step 6: Final answer
    x = 17,512.18

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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.