Home / 21,278.03-31,903.34-10,184.45

Finding the Fourth Proportional to 21,278.03, 31,903.34 and 10,184.45

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Solution

The fourth proportional to 21,278.03, 31,903.34 and 10,184.45 is: 15,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.03 : 31,903.34 = 10,184.45 : x
  2. Step 2: Convert to fraction form
    21,278.03/31,903.34 = 10,184.45/x
  3. Step 3: Cross multiply
    21,278.03x = 31,903.34 × 10,184.45
  4. Step 4: Simplify right side
    21,278.03x = 324,917,760.62
  5. Step 5: Solve for x
    x = 324,917,760.62/21,278.03
  6. Step 6: Final answer
    x = 15,270.11

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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.