Home / 20,607.80-28,438.42-11,654.97

Finding the Fourth Proportional to 20,607.80, 28,438.42 and 11,654.97

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Solution

The fourth proportional to 20,607.80, 28,438.42 and 11,654.97 is: 16,083.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.80 : 28,438.42 = 11,654.97 : x
  2. Step 2: Convert to fraction form
    20,607.80/28,438.42 = 11,654.97/x
  3. Step 3: Cross multiply
    20,607.80x = 28,438.42 × 11,654.97
  4. Step 4: Simplify right side
    20,607.80x = 331,448,931.95
  5. Step 5: Solve for x
    x = 331,448,931.95/20,607.80
  6. Step 6: Final answer
    x = 16,083.66

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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.