Home / 10,076.78-15,114.92-4,815.51

Finding the Fourth Proportional to 10,076.78, 15,114.92 and 4,815.51

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Solution

The fourth proportional to 10,076.78, 15,114.92 and 4,815.51 is: 7,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,076.78 : 15,114.92 = 4,815.51 : x
  2. Step 2: Convert to fraction form
    10,076.78/15,114.92 = 4,815.51/x
  3. Step 3: Cross multiply
    10,076.78x = 15,114.92 × 4,815.51
  4. Step 4: Simplify right side
    10,076.78x = 72,786,024.33
  5. Step 5: Solve for x
    x = 72,786,024.33/10,076.78
  6. Step 6: Final answer
    x = 7,223.15

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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.