Home / 20,454.50-28,222.34-11,500.22

Finding the Fourth Proportional to 20,454.50, 28,222.34 and 11,500.22

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Solution

The fourth proportional to 20,454.50, 28,222.34 and 11,500.22 is: 15,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.50 : 28,222.34 = 11,500.22 : x
  2. Step 2: Convert to fraction form
    20,454.50/28,222.34 = 11,500.22/x
  3. Step 3: Cross multiply
    20,454.50x = 28,222.34 × 11,500.22
  4. Step 4: Simplify right side
    20,454.50x = 324,563,118.91
  5. Step 5: Solve for x
    x = 324,563,118.91/20,454.50
  6. Step 6: Final answer
    x = 15,867.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.