Home / 20,871.88-31,454.56-18,794.24

Finding the Fourth Proportional to 20,871.88, 31,454.56 and 18,794.24

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Solution

The fourth proportional to 20,871.88, 31,454.56 and 18,794.24 is: 28,323.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.88 : 31,454.56 = 18,794.24 : x
  2. Step 2: Convert to fraction form
    20,871.88/31,454.56 = 18,794.24/x
  3. Step 3: Cross multiply
    20,871.88x = 31,454.56 × 18,794.24
  4. Step 4: Simplify right side
    20,871.88x = 591,164,549.73
  5. Step 5: Solve for x
    x = 591,164,549.73/20,871.88
  6. Step 6: Final answer
    x = 28,323.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.