Home / 51,285.18-76,921.52-13,842.38

Finding the Fourth Proportional to 51,285.18, 76,921.52 and 13,842.38

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Solution

The fourth proportional to 51,285.18, 76,921.52 and 13,842.38 is: 20,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,285.18 : 76,921.52 = 13,842.38 : x
  2. Step 2: Convert to fraction form
    51,285.18/76,921.52 = 13,842.38/x
  3. Step 3: Cross multiply
    51,285.18x = 76,921.52 × 13,842.38
  4. Step 4: Simplify right side
    51,285.18x = 1,064,776,910.02
  5. Step 5: Solve for x
    x = 1,064,776,910.02/51,285.18
  6. Step 6: Final answer
    x = 20,761.88

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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.