Home / 20,424.58-28,185.88-11,932.54

Finding the Fourth Proportional to 20,424.58, 28,185.88 and 11,932.54

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Solution

The fourth proportional to 20,424.58, 28,185.88 and 11,932.54 is: 16,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.58 : 28,185.88 = 11,932.54 : x
  2. Step 2: Convert to fraction form
    20,424.58/28,185.88 = 11,932.54/x
  3. Step 3: Cross multiply
    20,424.58x = 28,185.88 × 11,932.54
  4. Step 4: Simplify right side
    20,424.58x = 336,329,140.54
  5. Step 5: Solve for x
    x = 336,329,140.54/20,424.58
  6. Step 6: Final answer
    x = 16,466.88

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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.