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Finding the Fourth Proportional to 21,955.66, 32,930.75 and 7,163.34

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Solution

The fourth proportional to 21,955.66, 32,930.75 and 7,163.34 is: 10,744.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.66 : 32,930.75 = 7,163.34 : x
  2. Step 2: Convert to fraction form
    21,955.66/32,930.75 = 7,163.34/x
  3. Step 3: Cross multiply
    21,955.66x = 32,930.75 × 7,163.34
  4. Step 4: Simplify right side
    21,955.66x = 235,894,053.12
  5. Step 5: Solve for x
    x = 235,894,053.12/21,955.66
  6. Step 6: Final answer
    x = 10,744.11

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1.5x scale

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.