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Finding the Fourth Proportional to 21,955.33, 32,940.39 and 6,964.93

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Solution

The fourth proportional to 21,955.33, 32,940.39 and 6,964.93 is: 10,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.33 : 32,940.39 = 6,964.93 : x
  2. Step 2: Convert to fraction form
    21,955.33/32,940.39 = 6,964.93/x
  3. Step 3: Cross multiply
    21,955.33x = 32,940.39 × 6,964.93
  4. Step 4: Simplify right side
    21,955.33x = 229,427,510.52
  5. Step 5: Solve for x
    x = 229,427,510.52/21,955.33
  6. Step 6: Final answer
    x = 10,449.74

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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.