Home / 21,149.45-31,721.42-10,063.19

Finding the Fourth Proportional to 21,149.45, 31,721.42 and 10,063.19

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Solution

The fourth proportional to 21,149.45, 31,721.42 and 10,063.19 is: 15,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.45 : 31,721.42 = 10,063.19 : x
  2. Step 2: Convert to fraction form
    21,149.45/31,721.42 = 10,063.19/x
  3. Step 3: Cross multiply
    21,149.45x = 31,721.42 × 10,063.19
  4. Step 4: Simplify right side
    21,149.45x = 319,218,602.56
  5. Step 5: Solve for x
    x = 319,218,602.56/21,149.45
  6. Step 6: Final answer
    x = 15,093.47

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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.