Home / 21,854.80-30,154.44-12,422.62

Finding the Fourth Proportional to 21,854.80, 30,154.44 and 12,422.62

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Solution

The fourth proportional to 21,854.80, 30,154.44 and 12,422.62 is: 17,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.80 : 30,154.44 = 12,422.62 : x
  2. Step 2: Convert to fraction form
    21,854.80/30,154.44 = 12,422.62/x
  3. Step 3: Cross multiply
    21,854.80x = 30,154.44 × 12,422.62
  4. Step 4: Simplify right side
    21,854.80x = 374,597,149.43
  5. Step 5: Solve for x
    x = 374,597,149.43/21,854.80
  6. Step 6: Final answer
    x = 17,140.27

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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.