Home / 15,396.05-21,249.94-10,009.11

Finding the Fourth Proportional to 15,396.05, 21,249.94 and 10,009.11

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Solution

The fourth proportional to 15,396.05, 21,249.94 and 10,009.11 is: 13,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.05 : 21,249.94 = 10,009.11 : x
  2. Step 2: Convert to fraction form
    15,396.05/21,249.94 = 10,009.11/x
  3. Step 3: Cross multiply
    15,396.05x = 21,249.94 × 10,009.11
  4. Step 4: Simplify right side
    15,396.05x = 212,692,961.93
  5. Step 5: Solve for x
    x = 212,692,961.93/15,396.05
  6. Step 6: Final answer
    x = 13,814.78

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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.