Home / 21,931.97-32,905.24-7,141.37

Finding the Fourth Proportional to 21,931.97, 32,905.24 and 7,141.37

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Solution

The fourth proportional to 21,931.97, 32,905.24 and 7,141.37 is: 10,714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.97 : 32,905.24 = 7,141.37 : x
  2. Step 2: Convert to fraction form
    21,931.97/32,905.24 = 7,141.37/x
  3. Step 3: Cross multiply
    21,931.97x = 32,905.24 × 7,141.37
  4. Step 4: Simplify right side
    21,931.97x = 234,988,311.40
  5. Step 5: Solve for x
    x = 234,988,311.40/21,931.97
  6. Step 6: Final answer
    x = 10,714.42

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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.