Home / 20,418.50-28,177.43-11,466.79

Finding the Fourth Proportional to 20,418.50, 28,177.43 and 11,466.79

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Solution

The fourth proportional to 20,418.50, 28,177.43 and 11,466.79 is: 15,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.50 : 28,177.43 = 11,466.79 : x
  2. Step 2: Convert to fraction form
    20,418.50/28,177.43 = 11,466.79/x
  3. Step 3: Cross multiply
    20,418.50x = 28,177.43 × 11,466.79
  4. Step 4: Simplify right side
    20,418.50x = 323,104,544.77
  5. Step 5: Solve for x
    x = 323,104,544.77/20,418.50
  6. Step 6: Final answer
    x = 15,824.11

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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.