Home / 10,102.86-15,144.57-3,172.50

Finding the Fourth Proportional to 10,102.86, 15,144.57 and 3,172.50

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Solution

The fourth proportional to 10,102.86, 15,144.57 and 3,172.50 is: 4,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.86 : 15,144.57 = 3,172.50 : x
  2. Step 2: Convert to fraction form
    10,102.86/15,144.57 = 3,172.50/x
  3. Step 3: Cross multiply
    10,102.86x = 15,144.57 × 3,172.50
  4. Step 4: Simplify right side
    10,102.86x = 48,046,148.33
  5. Step 5: Solve for x
    x = 48,046,148.33/10,102.86
  6. Step 6: Final answer
    x = 4,755.70

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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.