Home / 21,934.92-32,905.14-7,139.88

Finding the Fourth Proportional to 21,934.92, 32,905.14 and 7,139.88

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Solution

The fourth proportional to 21,934.92, 32,905.14 and 7,139.88 is: 10,710.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.92 : 32,905.14 = 7,139.88 : x
  2. Step 2: Convert to fraction form
    21,934.92/32,905.14 = 7,139.88/x
  3. Step 3: Cross multiply
    21,934.92x = 32,905.14 × 7,139.88
  4. Step 4: Simplify right side
    21,934.92x = 234,938,750.98
  5. Step 5: Solve for x
    x = 234,938,750.98/21,934.92
  6. Step 6: Final answer
    x = 10,710.72

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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.