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Finding the Fourth Proportional to 21,958.36, 32,941.04 and 7,166.12

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Solution

The fourth proportional to 21,958.36, 32,941.04 and 7,166.12 is: 10,750.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.36 : 32,941.04 = 7,166.12 : x
  2. Step 2: Convert to fraction form
    21,958.36/32,941.04 = 7,166.12/x
  3. Step 3: Cross multiply
    21,958.36x = 32,941.04 × 7,166.12
  4. Step 4: Simplify right side
    21,958.36x = 236,059,445.56
  5. Step 5: Solve for x
    x = 236,059,445.56/21,958.36
  6. Step 6: Final answer
    x = 10,750.32

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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.