Home / 21,380.88-32,071.97-7,340.70

Finding the Fourth Proportional to 21,380.88, 32,071.97 and 7,340.70

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Solution

The fourth proportional to 21,380.88, 32,071.97 and 7,340.70 is: 11,011.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.88 : 32,071.97 = 7,340.70 : x
  2. Step 2: Convert to fraction form
    21,380.88/32,071.97 = 7,340.70/x
  3. Step 3: Cross multiply
    21,380.88x = 32,071.97 × 7,340.70
  4. Step 4: Simplify right side
    21,380.88x = 235,430,710.18
  5. Step 5: Solve for x
    x = 235,430,710.18/21,380.88
  6. Step 6: Final answer
    x = 11,011.27

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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.