Home / 20,418.31-28,176.55-12,473.83

Finding the Fourth Proportional to 20,418.31, 28,176.55 and 12,473.83

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Solution

The fourth proportional to 20,418.31, 28,176.55 and 12,473.83 is: 17,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.31 : 28,176.55 = 12,473.83 : x
  2. Step 2: Convert to fraction form
    20,418.31/28,176.55 = 12,473.83/x
  3. Step 3: Cross multiply
    20,418.31x = 28,176.55 × 12,473.83
  4. Step 4: Simplify right side
    20,418.31x = 351,469,494.69
  5. Step 5: Solve for x
    x = 351,469,494.69/20,418.31
  6. Step 6: Final answer
    x = 17,213.45

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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.