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Finding the Fourth Proportional to 18,131.10, 27,196.65 and 15,506.70

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Solution

The fourth proportional to 18,131.10, 27,196.65 and 15,506.70 is: 23,260.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.10 : 27,196.65 = 15,506.70 : x
  2. Step 2: Convert to fraction form
    18,131.10/27,196.65 = 15,506.70/x
  3. Step 3: Cross multiply
    18,131.10x = 27,196.65 × 15,506.70
  4. Step 4: Simplify right side
    18,131.10x = 421,730,292.56
  5. Step 5: Solve for x
    x = 421,730,292.56/18,131.10
  6. Step 6: Final answer
    x = 23,260.05

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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.