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Finding the Fourth Proportional to 21,953.30, 32,930.96 and 7,163.10

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Solution

The fourth proportional to 21,953.30, 32,930.96 and 7,163.10 is: 10,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.30 : 32,930.96 = 7,163.10 : x
  2. Step 2: Convert to fraction form
    21,953.30/32,930.96 = 7,163.10/x
  3. Step 3: Cross multiply
    21,953.30x = 32,930.96 × 7,163.10
  4. Step 4: Simplify right side
    21,953.30x = 235,887,723.76
  5. Step 5: Solve for x
    x = 235,887,723.76/21,953.30
  6. Step 6: Final answer
    x = 10,744.98

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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.