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Finding the Fourth Proportional to 18,308.97, 27,461.03 and 5,162.40

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Solution

The fourth proportional to 18,308.97, 27,461.03 and 5,162.40 is: 7,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.97 : 27,461.03 = 5,162.40 : x
  2. Step 2: Convert to fraction form
    18,308.97/27,461.03 = 5,162.40/x
  3. Step 3: Cross multiply
    18,308.97x = 27,461.03 × 5,162.40
  4. Step 4: Simplify right side
    18,308.97x = 141,764,795.46
  5. Step 5: Solve for x
    x = 141,764,795.46/18,308.97
  6. Step 6: Final answer
    x = 7,742.91

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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.