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Finding the Fourth Proportional to 18,203.68, 25,121.07 and 10,245.95

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Solution

The fourth proportional to 18,203.68, 25,121.07 and 10,245.95 is: 14,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.68 : 25,121.07 = 10,245.95 : x
  2. Step 2: Convert to fraction form
    18,203.68/25,121.07 = 10,245.95/x
  3. Step 3: Cross multiply
    18,203.68x = 25,121.07 × 10,245.95
  4. Step 4: Simplify right side
    18,203.68x = 257,389,101.56
  5. Step 5: Solve for x
    x = 257,389,101.56/18,203.68
  6. Step 6: Final answer
    x = 14,139.40

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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.