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Finding the Fourth Proportional to 18,304.55, 27,487.19 and 11,422.79

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Solution

The fourth proportional to 18,304.55, 27,487.19 and 11,422.79 is: 17,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,304.55 : 27,487.19 = 11,422.79 : x
  2. Step 2: Convert to fraction form
    18,304.55/27,487.19 = 11,422.79/x
  3. Step 3: Cross multiply
    18,304.55x = 27,487.19 × 11,422.79
  4. Step 4: Simplify right side
    18,304.55x = 313,980,399.06
  5. Step 5: Solve for x
    x = 313,980,399.06/18,304.55
  6. Step 6: Final answer
    x = 17,153.13

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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.