Home / 21,134.46-31,702-10,042.28

Finding the Fourth Proportional to 21,134.46, 31,702 and 10,042.28

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Solution

The fourth proportional to 21,134.46, 31,702 and 10,042.28 is: 15,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.46 : 31,702 = 10,042.28 : x
  2. Step 2: Convert to fraction form
    21,134.46/31,702 = 10,042.28/x
  3. Step 3: Cross multiply
    21,134.46x = 31,702 × 10,042.28
  4. Step 4: Simplify right side
    21,134.46x = 318,360,360.56
  5. Step 5: Solve for x
    x = 318,360,360.56/21,134.46
  6. Step 6: Final answer
    x = 15,063.57

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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.