Home / 21,900.18-32,874.84-8,761.72

Finding the Fourth Proportional to 21,900.18, 32,874.84 and 8,761.72

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Solution

The fourth proportional to 21,900.18, 32,874.84 and 8,761.72 is: 13,152.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.18 : 32,874.84 = 8,761.72 : x
  2. Step 2: Convert to fraction form
    21,900.18/32,874.84 = 8,761.72/x
  3. Step 3: Cross multiply
    21,900.18x = 32,874.84 × 8,761.72
  4. Step 4: Simplify right side
    21,900.18x = 288,040,143.12
  5. Step 5: Solve for x
    x = 288,040,143.12/21,900.18
  6. Step 6: Final answer
    x = 13,152.41

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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.