Home / 10,781.37-16,172.05-4,920.57

Finding the Fourth Proportional to 10,781.37, 16,172.05 and 4,920.57

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Solution

The fourth proportional to 10,781.37, 16,172.05 and 4,920.57 is: 7,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.37 : 16,172.05 = 4,920.57 : x
  2. Step 2: Convert to fraction form
    10,781.37/16,172.05 = 4,920.57/x
  3. Step 3: Cross multiply
    10,781.37x = 16,172.05 × 4,920.57
  4. Step 4: Simplify right side
    10,781.37x = 79,575,704.07
  5. Step 5: Solve for x
    x = 79,575,704.07/10,781.37
  6. Step 6: Final answer
    x = 7,380.85

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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.