Home / 51,239.96-76,854.16-13,802.78

Finding the Fourth Proportional to 51,239.96, 76,854.16 and 13,802.78

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Solution

The fourth proportional to 51,239.96, 76,854.16 and 13,802.78 is: 20,702.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.96 : 76,854.16 = 13,802.78 : x
  2. Step 2: Convert to fraction form
    51,239.96/76,854.16 = 13,802.78/x
  3. Step 3: Cross multiply
    51,239.96x = 76,854.16 × 13,802.78
  4. Step 4: Simplify right side
    51,239.96x = 1,060,801,062.56
  5. Step 5: Solve for x
    x = 1,060,801,062.56/51,239.96
  6. Step 6: Final answer
    x = 20,702.61

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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.