Home / 20,769.95-28,662.37-11,338.52

Finding the Fourth Proportional to 20,769.95, 28,662.37 and 11,338.52

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Solution

The fourth proportional to 20,769.95, 28,662.37 and 11,338.52 is: 15,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.95 : 28,662.37 = 11,338.52 : x
  2. Step 2: Convert to fraction form
    20,769.95/28,662.37 = 11,338.52/x
  3. Step 3: Cross multiply
    20,769.95x = 28,662.37 × 11,338.52
  4. Step 4: Simplify right side
    20,769.95x = 324,988,683.83
  5. Step 5: Solve for x
    x = 324,988,683.83/20,769.95
  6. Step 6: Final answer
    x = 15,647.06

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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.