Home / 10,781.50-16,172.32-3,761.48

Finding the Fourth Proportional to 10,781.50, 16,172.32 and 3,761.48

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Solution

The fourth proportional to 10,781.50, 16,172.32 and 3,761.48 is: 5,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.50 : 16,172.32 = 3,761.48 : x
  2. Step 2: Convert to fraction form
    10,781.50/16,172.32 = 3,761.48/x
  3. Step 3: Cross multiply
    10,781.50x = 16,172.32 × 3,761.48
  4. Step 4: Simplify right side
    10,781.50x = 60,831,889.26
  5. Step 5: Solve for x
    x = 60,831,889.26/10,781.50
  6. Step 6: Final answer
    x = 5,642.25

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1.5x scale

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.