Home / 42,676.13-63,982.48-20,468.36

Finding the Fourth Proportional to 42,676.13, 63,982.48 and 20,468.36

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Solution

The fourth proportional to 42,676.13, 63,982.48 and 20,468.36 is: 30,687.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,676.13 : 63,982.48 = 20,468.36 : x
  2. Step 2: Convert to fraction form
    42,676.13/63,982.48 = 20,468.36/x
  3. Step 3: Cross multiply
    42,676.13x = 63,982.48 × 20,468.36
  4. Step 4: Simplify right side
    42,676.13x = 1,309,616,434.33
  5. Step 5: Solve for x
    x = 1,309,616,434.33/42,676.13
  6. Step 6: Final answer
    x = 30,687.33

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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.