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Finding the Fourth Proportional to 21,990.96, 32,983.24 and 7,200.46

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Solution

The fourth proportional to 21,990.96, 32,983.24 and 7,200.46 is: 10,799.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.96 : 32,983.24 = 7,200.46 : x
  2. Step 2: Convert to fraction form
    21,990.96/32,983.24 = 7,200.46/x
  3. Step 3: Cross multiply
    21,990.96x = 32,983.24 × 7,200.46
  4. Step 4: Simplify right side
    21,990.96x = 237,494,500.29
  5. Step 5: Solve for x
    x = 237,494,500.29/21,990.96
  6. Step 6: Final answer
    x = 10,799.64

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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.