Home / 21,500.21-32,166.86-18,847.76

Finding the Fourth Proportional to 21,500.21, 32,166.86 and 18,847.76

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Solution

The fourth proportional to 21,500.21, 32,166.86 and 18,847.76 is: 28,198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.21 : 32,166.86 = 18,847.76 : x
  2. Step 2: Convert to fraction form
    21,500.21/32,166.86 = 18,847.76/x
  3. Step 3: Cross multiply
    21,500.21x = 32,166.86 × 18,847.76
  4. Step 4: Simplify right side
    21,500.21x = 606,273,002.16
  5. Step 5: Solve for x
    x = 606,273,002.16/21,500.21
  6. Step 6: Final answer
    x = 28,198.48

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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.