Home / 11,178.78-16,758.45-5,627.46

Finding the Fourth Proportional to 11,178.78, 16,758.45 and 5,627.46

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Solution

The fourth proportional to 11,178.78, 16,758.45 and 5,627.46 is: 8,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.78 : 16,758.45 = 5,627.46 : x
  2. Step 2: Convert to fraction form
    11,178.78/16,758.45 = 5,627.46/x
  3. Step 3: Cross multiply
    11,178.78x = 16,758.45 × 5,627.46
  4. Step 4: Simplify right side
    11,178.78x = 94,307,507.04
  5. Step 5: Solve for x
    x = 94,307,507.04/11,178.78
  6. Step 6: Final answer
    x = 8,436.30

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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.