Home / 20,102.24-27,731.76-12,543.68

Finding the Fourth Proportional to 20,102.24, 27,731.76 and 12,543.68

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Solution

The fourth proportional to 20,102.24, 27,731.76 and 12,543.68 is: 17,304.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.24 : 27,731.76 = 12,543.68 : x
  2. Step 2: Convert to fraction form
    20,102.24/27,731.76 = 12,543.68/x
  3. Step 3: Cross multiply
    20,102.24x = 27,731.76 × 12,543.68
  4. Step 4: Simplify right side
    20,102.24x = 347,858,323.28
  5. Step 5: Solve for x
    x = 347,858,323.28/20,102.24
  6. Step 6: Final answer
    x = 17,304.46

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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.