Home / 11,118.78-15,343.92-6,402.96

Finding the Fourth Proportional to 11,118.78, 15,343.92 and 6,402.96

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Solution

The fourth proportional to 11,118.78, 15,343.92 and 6,402.96 is: 8,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.78 : 15,343.92 = 6,402.96 : x
  2. Step 2: Convert to fraction form
    11,118.78/15,343.92 = 6,402.96/x
  3. Step 3: Cross multiply
    11,118.78x = 15,343.92 × 6,402.96
  4. Step 4: Simplify right side
    11,118.78x = 98,246,506.00
  5. Step 5: Solve for x
    x = 98,246,506.00/11,118.78
  6. Step 6: Final answer
    x = 8,836.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.