Home / 10,781.40-16,172.11-4,851.37

Finding the Fourth Proportional to 10,781.40, 16,172.11 and 4,851.37

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Solution

The fourth proportional to 10,781.40, 16,172.11 and 4,851.37 is: 7,277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.40 : 16,172.11 = 4,851.37 : x
  2. Step 2: Convert to fraction form
    10,781.40/16,172.11 = 4,851.37/x
  3. Step 3: Cross multiply
    10,781.40x = 16,172.11 × 4,851.37
  4. Step 4: Simplify right side
    10,781.40x = 78,456,889.29
  5. Step 5: Solve for x
    x = 78,456,889.29/10,781.40
  6. Step 6: Final answer
    x = 7,277.06

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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.