Home / 21,140.57-31,714.49-7,101.94

Finding the Fourth Proportional to 21,140.57, 31,714.49 and 7,101.94

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Solution

The fourth proportional to 21,140.57, 31,714.49 and 7,101.94 is: 10,654.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.57 : 31,714.49 = 7,101.94 : x
  2. Step 2: Convert to fraction form
    21,140.57/31,714.49 = 7,101.94/x
  3. Step 3: Cross multiply
    21,140.57x = 31,714.49 × 7,101.94
  4. Step 4: Simplify right side
    21,140.57x = 225,234,343.58
  5. Step 5: Solve for x
    x = 225,234,343.58/21,140.57
  6. Step 6: Final answer
    x = 10,654.13

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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.