Home / 20,336.76-28,065.97-11,384.82

Finding the Fourth Proportional to 20,336.76, 28,065.97 and 11,384.82

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Solution

The fourth proportional to 20,336.76, 28,065.97 and 11,384.82 is: 15,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.76 : 28,065.97 = 11,384.82 : x
  2. Step 2: Convert to fraction form
    20,336.76/28,065.97 = 11,384.82/x
  3. Step 3: Cross multiply
    20,336.76x = 28,065.97 × 11,384.82
  4. Step 4: Simplify right side
    20,336.76x = 319,526,016.58
  5. Step 5: Solve for x
    x = 319,526,016.58/20,336.76
  6. Step 6: Final answer
    x = 15,711.75

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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.