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Finding the Fourth Proportional to 18,616.40, 25,690.02 and 13,601.82

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Solution

The fourth proportional to 18,616.40, 25,690.02 and 13,601.82 is: 18,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.40 : 25,690.02 = 13,601.82 : x
  2. Step 2: Convert to fraction form
    18,616.40/25,690.02 = 13,601.82/x
  3. Step 3: Cross multiply
    18,616.40x = 25,690.02 × 13,601.82
  4. Step 4: Simplify right side
    18,616.40x = 349,431,027.84
  5. Step 5: Solve for x
    x = 349,431,027.84/18,616.40
  6. Step 6: Final answer
    x = 18,770.07

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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.