Home / 21,222.28-31,847.24-8,074.76

Finding the Fourth Proportional to 21,222.28, 31,847.24 and 8,074.76

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Solution

The fourth proportional to 21,222.28, 31,847.24 and 8,074.76 is: 12,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.28 : 31,847.24 = 8,074.76 : x
  2. Step 2: Convert to fraction form
    21,222.28/31,847.24 = 8,074.76/x
  3. Step 3: Cross multiply
    21,222.28x = 31,847.24 × 8,074.76
  4. Step 4: Simplify right side
    21,222.28x = 257,158,819.66
  5. Step 5: Solve for x
    x = 257,158,819.66/21,222.28
  6. Step 6: Final answer
    x = 12,117.40

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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.