Home / 20,513.42-30,767.39-5,721.10

Finding the Fourth Proportional to 20,513.42, 30,767.39 and 5,721.10

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Solution

The fourth proportional to 20,513.42, 30,767.39 and 5,721.10 is: 8,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.42 : 30,767.39 = 5,721.10 : x
  2. Step 2: Convert to fraction form
    20,513.42/30,767.39 = 5,721.10/x
  3. Step 3: Cross multiply
    20,513.42x = 30,767.39 × 5,721.10
  4. Step 4: Simplify right side
    20,513.42x = 176,023,161.09
  5. Step 5: Solve for x
    x = 176,023,161.09/20,513.42
  6. Step 6: Final answer
    x = 8,580.88

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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.