Home / 34,278.72-51,359.40-18,707.28

Finding the Fourth Proportional to 34,278.72, 51,359.40 and 18,707.28

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Solution

The fourth proportional to 34,278.72, 51,359.40 and 18,707.28 is: 28,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,278.72 : 51,359.40 = 18,707.28 : x
  2. Step 2: Convert to fraction form
    34,278.72/51,359.40 = 18,707.28/x
  3. Step 3: Cross multiply
    34,278.72x = 51,359.40 × 18,707.28
  4. Step 4: Simplify right side
    34,278.72x = 960,794,676.43
  5. Step 5: Solve for x
    x = 960,794,676.43/34,278.72
  6. Step 6: Final answer
    x = 28,028.90

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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.