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Finding the Fourth Proportional to 18,182.75, 25,071.50 and 12,803.47

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Solution

The fourth proportional to 18,182.75, 25,071.50 and 12,803.47 is: 17,654.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,182.75 : 25,071.50 = 12,803.47 : x
  2. Step 2: Convert to fraction form
    18,182.75/25,071.50 = 12,803.47/x
  3. Step 3: Cross multiply
    18,182.75x = 25,071.50 × 12,803.47
  4. Step 4: Simplify right side
    18,182.75x = 321,002,198.11
  5. Step 5: Solve for x
    x = 321,002,198.11/18,182.75
  6. Step 6: Final answer
    x = 17,654.22

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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.