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Finding the Fourth Proportional to 18,096.40, 27,139.80 and 5,616.40

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Solution

The fourth proportional to 18,096.40, 27,139.80 and 5,616.40 is: 8,423.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,096.40 : 27,139.80 = 5,616.40 : x
  2. Step 2: Convert to fraction form
    18,096.40/27,139.80 = 5,616.40/x
  3. Step 3: Cross multiply
    18,096.40x = 27,139.80 × 5,616.40
  4. Step 4: Simplify right side
    18,096.40x = 152,427,972.72
  5. Step 5: Solve for x
    x = 152,427,972.72/18,096.40
  6. Step 6: Final answer
    x = 8,423.11

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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.