Home / 20,777.54-28,669.66-11,825.19

Finding the Fourth Proportional to 20,777.54, 28,669.66 and 11,825.19

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Solution

The fourth proportional to 20,777.54, 28,669.66 and 11,825.19 is: 16,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.54 : 28,669.66 = 11,825.19 : x
  2. Step 2: Convert to fraction form
    20,777.54/28,669.66 = 11,825.19/x
  3. Step 3: Cross multiply
    20,777.54x = 28,669.66 × 11,825.19
  4. Step 4: Simplify right side
    20,777.54x = 339,024,147.17
  5. Step 5: Solve for x
    x = 339,024,147.17/20,777.54
  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.