Home / 34,543.72-51,815.54-13,781.80

Finding the Fourth Proportional to 34,543.72, 51,815.54 and 13,781.80

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Solution

The fourth proportional to 34,543.72, 51,815.54 and 13,781.80 is: 20,672.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,543.72 : 51,815.54 = 13,781.80 : x
  2. Step 2: Convert to fraction form
    34,543.72/51,815.54 = 13,781.80/x
  3. Step 3: Cross multiply
    34,543.72x = 51,815.54 × 13,781.80
  4. Step 4: Simplify right side
    34,543.72x = 714,111,340.26
  5. Step 5: Solve for x
    x = 714,111,340.26/34,543.72
  6. Step 6: Final answer
    x = 20,672.68

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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.