Home / 19,989.82-30,003.02-10,135.90

Finding the Fourth Proportional to 19,989.82, 30,003.02 and 10,135.90

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Solution

The fourth proportional to 19,989.82, 30,003.02 and 10,135.90 is: 15,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.82 : 30,003.02 = 10,135.90 : x
  2. Step 2: Convert to fraction form
    19,989.82/30,003.02 = 10,135.90/x
  3. Step 3: Cross multiply
    19,989.82x = 30,003.02 × 10,135.90
  4. Step 4: Simplify right side
    19,989.82x = 304,107,409.72
  5. Step 5: Solve for x
    x = 304,107,409.72/19,989.82
  6. Step 6: Final answer
    x = 15,213.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.