Home / 20,540.10-30,822.30-14,979.45

Finding the Fourth Proportional to 20,540.10, 30,822.30 and 14,979.45

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Solution

The fourth proportional to 20,540.10, 30,822.30 and 14,979.45 is: 22,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.10 : 30,822.30 = 14,979.45 : x
  2. Step 2: Convert to fraction form
    20,540.10/30,822.30 = 14,979.45/x
  3. Step 3: Cross multiply
    20,540.10x = 30,822.30 × 14,979.45
  4. Step 4: Simplify right side
    20,540.10x = 461,701,101.74
  5. Step 5: Solve for x
    x = 461,701,101.74/20,540.10
  6. Step 6: Final answer
    x = 22,478.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.