Home / 20,777.89-28,654.03-16,542.93

Finding the Fourth Proportional to 20,777.89, 28,654.03 and 16,542.93

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Solution

The fourth proportional to 20,777.89, 28,654.03 and 16,542.93 is: 22,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.89 : 28,654.03 = 16,542.93 : x
  2. Step 2: Convert to fraction form
    20,777.89/28,654.03 = 16,542.93/x
  3. Step 3: Cross multiply
    20,777.89x = 28,654.03 × 16,542.93
  4. Step 4: Simplify right side
    20,777.89x = 474,021,694.11
  5. Step 5: Solve for x
    x = 474,021,694.11/20,777.89
  6. Step 6: Final answer
    x = 22,813.75

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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.