Home / 18,616.39-25,690.76-10,118.55

Finding the Fourth Proportional to 18,616.39, 25,690.76 and 10,118.55

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Solution

The fourth proportional to 18,616.39, 25,690.76 and 10,118.55 is: 13,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.39 : 25,690.76 = 10,118.55 : x
  2. Step 2: Convert to fraction form
    18,616.39/25,690.76 = 10,118.55/x
  3. Step 3: Cross multiply
    18,616.39x = 25,690.76 × 10,118.55
  4. Step 4: Simplify right side
    18,616.39x = 259,953,239.60
  5. Step 5: Solve for x
    x = 259,953,239.60/18,616.39
  6. Step 6: Final answer
    x = 13,963.68

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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.