Home / 10,110.78-15,156.21-4,839.72

Finding the Fourth Proportional to 10,110.78, 15,156.21 and 4,839.72

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Solution

The fourth proportional to 10,110.78, 15,156.21 and 4,839.72 is: 7,254.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,110.78 : 15,156.21 = 4,839.72 : x
  2. Step 2: Convert to fraction form
    10,110.78/15,156.21 = 4,839.72/x
  3. Step 3: Cross multiply
    10,110.78x = 15,156.21 × 4,839.72
  4. Step 4: Simplify right side
    10,110.78x = 73,351,812.66
  5. Step 5: Solve for x
    x = 73,351,812.66/10,110.78
  6. Step 6: Final answer
    x = 7,254.81

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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.