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Finding the Fourth Proportional to 21,232.34, 31,852.34 and 8,745.55

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Solution

The fourth proportional to 21,232.34, 31,852.34 and 8,745.55 is: 13,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.34 : 31,852.34 = 8,745.55 : x
  2. Step 2: Convert to fraction form
    21,232.34/31,852.34 = 8,745.55/x
  3. Step 3: Cross multiply
    21,232.34x = 31,852.34 × 8,745.55
  4. Step 4: Simplify right side
    21,232.34x = 278,566,141.52
  5. Step 5: Solve for x
    x = 278,566,141.52/21,232.34
  6. Step 6: Final answer
    x = 13,119.90

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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.