Home / 11,138.73-15,372.18-6,423.32

Finding the Fourth Proportional to 11,138.73, 15,372.18 and 6,423.32

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Solution

The fourth proportional to 11,138.73, 15,372.18 and 6,423.32 is: 8,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.73 : 15,372.18 = 6,423.32 : x
  2. Step 2: Convert to fraction form
    11,138.73/15,372.18 = 6,423.32/x
  3. Step 3: Cross multiply
    11,138.73x = 15,372.18 × 6,423.32
  4. Step 4: Simplify right side
    11,138.73x = 98,740,354.38
  5. Step 5: Solve for x
    x = 98,740,354.38/11,138.73
  6. Step 6: Final answer
    x = 8,864.60

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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.