Home / 18,521.96-25,560.87-10,138.46

Finding the Fourth Proportional to 18,521.96, 25,560.87 and 10,138.46

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Solution

The fourth proportional to 18,521.96, 25,560.87 and 10,138.46 is: 13,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.96 : 25,560.87 = 10,138.46 : x
  2. Step 2: Convert to fraction form
    18,521.96/25,560.87 = 10,138.46/x
  3. Step 3: Cross multiply
    18,521.96x = 25,560.87 × 10,138.46
  4. Step 4: Simplify right side
    18,521.96x = 259,147,858.06
  5. Step 5: Solve for x
    x = 259,147,858.06/18,521.96
  6. Step 6: Final answer
    x = 13,991.38

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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.