Home / 20,622.54-28,454.76-11,672.22

Finding the Fourth Proportional to 20,622.54, 28,454.76 and 11,672.22

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Solution

The fourth proportional to 20,622.54, 28,454.76 and 11,672.22 is: 16,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.54 : 28,454.76 = 11,672.22 : x
  2. Step 2: Convert to fraction form
    20,622.54/28,454.76 = 11,672.22/x
  3. Step 3: Cross multiply
    20,622.54x = 28,454.76 × 11,672.22
  4. Step 4: Simplify right side
    20,622.54x = 332,130,218.77
  5. Step 5: Solve for x
    x = 332,130,218.77/20,622.54
  6. Step 6: Final answer
    x = 16,105.20

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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.