Home / 10,102.42-15,172.46-9,279.59

Finding the Fourth Proportional to 10,102.42, 15,172.46 and 9,279.59

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Solution

The fourth proportional to 10,102.42, 15,172.46 and 9,279.59 is: 13,936.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.42 : 15,172.46 = 9,279.59 : x
  2. Step 2: Convert to fraction form
    10,102.42/15,172.46 = 9,279.59/x
  3. Step 3: Cross multiply
    10,102.42x = 15,172.46 × 9,279.59
  4. Step 4: Simplify right side
    10,102.42x = 140,794,161.69
  5. Step 5: Solve for x
    x = 140,794,161.69/10,102.42
  6. Step 6: Final answer
    x = 13,936.68

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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.