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Finding the Fourth Proportional to 21,754.62, 32,632.62 and 7,716.78

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Solution

The fourth proportional to 21,754.62, 32,632.62 and 7,716.78 is: 11,575.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.62 : 32,632.62 = 7,716.78 : x
  2. Step 2: Convert to fraction form
    21,754.62/32,632.62 = 7,716.78/x
  3. Step 3: Cross multiply
    21,754.62x = 32,632.62 × 7,716.78
  4. Step 4: Simplify right side
    21,754.62x = 251,818,749.36
  5. Step 5: Solve for x
    x = 251,818,749.36/21,754.62
  6. Step 6: Final answer
    x = 11,575.41

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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.