Home / 42,676.81-63,983.52-20,469.04

Finding the Fourth Proportional to 42,676.81, 63,983.52 and 20,469.04

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Solution

The fourth proportional to 42,676.81, 63,983.52 and 20,469.04 is: 30,688.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,676.81 : 63,983.52 = 20,469.04 : x
  2. Step 2: Convert to fraction form
    42,676.81/63,983.52 = 20,469.04/x
  3. Step 3: Cross multiply
    42,676.81x = 63,983.52 × 20,469.04
  4. Step 4: Simplify right side
    42,676.81x = 1,309,681,230.22
  5. Step 5: Solve for x
    x = 1,309,681,230.22/42,676.81
  6. Step 6: Final answer
    x = 30,688.36

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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.