Home / 18,087.67-24,961.78-10,129.72

Finding the Fourth Proportional to 18,087.67, 24,961.78 and 10,129.72

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Solution

The fourth proportional to 18,087.67, 24,961.78 and 10,129.72 is: 13,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.67 : 24,961.78 = 10,129.72 : x
  2. Step 2: Convert to fraction form
    18,087.67/24,961.78 = 10,129.72/x
  3. Step 3: Cross multiply
    18,087.67x = 24,961.78 × 10,129.72
  4. Step 4: Simplify right side
    18,087.67x = 252,855,842.10
  5. Step 5: Solve for x
    x = 252,855,842.10/18,087.67
  6. Step 6: Final answer
    x = 13,979.46

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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.