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Finding the Fourth Proportional to 21,375.34, 32,054.80 and 7,331.14

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Solution

The fourth proportional to 21,375.34, 32,054.80 and 7,331.14 is: 10,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.34 : 32,054.80 = 7,331.14 : x
  2. Step 2: Convert to fraction form
    21,375.34/32,054.80 = 7,331.14/x
  3. Step 3: Cross multiply
    21,375.34x = 32,054.80 × 7,331.14
  4. Step 4: Simplify right side
    21,375.34x = 234,998,226.47
  5. Step 5: Solve for x
    x = 234,998,226.47/21,375.34
  6. Step 6: Final answer
    x = 10,993.89

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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.