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Finding the Fourth Proportional to 18,191.79, 25,104.40 and 10,234.01

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Solution

The fourth proportional to 18,191.79, 25,104.40 and 10,234.01 is: 14,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.79 : 25,104.40 = 10,234.01 : x
  2. Step 2: Convert to fraction form
    18,191.79/25,104.40 = 10,234.01/x
  3. Step 3: Cross multiply
    18,191.79x = 25,104.40 × 10,234.01
  4. Step 4: Simplify right side
    18,191.79x = 256,918,717.82
  5. Step 5: Solve for x
    x = 256,918,717.82/18,191.79
  6. Step 6: Final answer
    x = 14,122.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.