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Finding the Fourth Proportional to 18,610.59, 25,682.72 and 10,112.79

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Solution

The fourth proportional to 18,610.59, 25,682.72 and 10,112.79 is: 13,955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.59 : 25,682.72 = 10,112.79 : x
  2. Step 2: Convert to fraction form
    18,610.59/25,682.72 = 10,112.79/x
  3. Step 3: Cross multiply
    18,610.59x = 25,682.72 × 10,112.79
  4. Step 4: Simplify right side
    18,610.59x = 259,723,953.99
  5. Step 5: Solve for x
    x = 259,723,953.99/18,610.59
  6. Step 6: Final answer
    x = 13,955.71

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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.