Home / 20,262.80-27,961.93-12,713.20

Finding the Fourth Proportional to 20,262.80, 27,961.93 and 12,713.20

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Solution

The fourth proportional to 20,262.80, 27,961.93 and 12,713.20 is: 17,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.80 : 27,961.93 = 12,713.20 : x
  2. Step 2: Convert to fraction form
    20,262.80/27,961.93 = 12,713.20/x
  3. Step 3: Cross multiply
    20,262.80x = 27,961.93 × 12,713.20
  4. Step 4: Simplify right side
    20,262.80x = 355,485,608.48
  5. Step 5: Solve for x
    x = 355,485,608.48/20,262.80
  6. Step 6: Final answer
    x = 17,543.76

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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.