Home / 18,521.82-25,560.21-10,138.32

Finding the Fourth Proportional to 18,521.82, 25,560.21 and 10,138.32

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Solution

The fourth proportional to 18,521.82, 25,560.21 and 10,138.32 is: 13,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.82 : 25,560.21 = 10,138.32 : x
  2. Step 2: Convert to fraction form
    18,521.82/25,560.21 = 10,138.32/x
  3. Step 3: Cross multiply
    18,521.82x = 25,560.21 × 10,138.32
  4. Step 4: Simplify right side
    18,521.82x = 259,137,588.25
  5. Step 5: Solve for x
    x = 259,137,588.25/18,521.82
  6. Step 6: Final answer
    x = 13,990.94

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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.