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Finding the Fourth Proportional to 21,960.72, 32,937.64 and 7,166.37

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Solution

The fourth proportional to 21,960.72, 32,937.64 and 7,166.37 is: 10,748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.72 : 32,937.64 = 7,166.37 : x
  2. Step 2: Convert to fraction form
    21,960.72/32,937.64 = 7,166.37/x
  3. Step 3: Cross multiply
    21,960.72x = 32,937.64 × 7,166.37
  4. Step 4: Simplify right side
    21,960.72x = 236,043,420.77
  5. Step 5: Solve for x
    x = 236,043,420.77/21,960.72
  6. Step 6: Final answer
    x = 10,748.44

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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.