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Finding the Fourth Proportional to 18,248.78, 27,353.10 and 7,153.40

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Solution

The fourth proportional to 18,248.78, 27,353.10 and 7,153.40 is: 10,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,248.78 : 27,353.10 = 7,153.40 : x
  2. Step 2: Convert to fraction form
    18,248.78/27,353.10 = 7,153.40/x
  3. Step 3: Cross multiply
    18,248.78x = 27,353.10 × 7,153.40
  4. Step 4: Simplify right side
    18,248.78x = 195,667,665.54
  5. Step 5: Solve for x
    x = 195,667,665.54/18,248.78
  6. Step 6: Final answer
    x = 10,722.23

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1.5x scale

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.