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Finding the Fourth Proportional to 18,697.88, 25,815.03 and 11,633.87

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Solution

The fourth proportional to 18,697.88, 25,815.03 and 11,633.87 is: 16,062.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.88 : 25,815.03 = 11,633.87 : x
  2. Step 2: Convert to fraction form
    18,697.88/25,815.03 = 11,633.87/x
  3. Step 3: Cross multiply
    18,697.88x = 25,815.03 × 11,633.87
  4. Step 4: Simplify right side
    18,697.88x = 300,328,703.07
  5. Step 5: Solve for x
    x = 300,328,703.07/18,697.88
  6. Step 6: Final answer
    x = 16,062.18

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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.