Home / 20,775.06-28,670.61-11,823.39

Finding the Fourth Proportional to 20,775.06, 28,670.61 and 11,823.39

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Solution

The fourth proportional to 20,775.06, 28,670.61 and 11,823.39 is: 16,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.06 : 28,670.61 = 11,823.39 : x
  2. Step 2: Convert to fraction form
    20,775.06/28,670.61 = 11,823.39/x
  3. Step 3: Cross multiply
    20,775.06x = 28,670.61 × 11,823.39
  4. Step 4: Simplify right side
    20,775.06x = 338,983,803.57
  5. Step 5: Solve for x
    x = 338,983,803.57/20,775.06
  6. Step 6: Final answer
    x = 16,316.86

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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.