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Finding the Fourth Proportional to 18,340.40, 27,510.60 and 4,489.40

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Solution

The fourth proportional to 18,340.40, 27,510.60 and 4,489.40 is: 6,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.40 : 27,510.60 = 4,489.40 : x
  2. Step 2: Convert to fraction form
    18,340.40/27,510.60 = 4,489.40/x
  3. Step 3: Cross multiply
    18,340.40x = 27,510.60 × 4,489.40
  4. Step 4: Simplify right side
    18,340.40x = 123,506,087.64
  5. Step 5: Solve for x
    x = 123,506,087.64/18,340.40
  6. Step 6: Final answer
    x = 6,734.10

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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.