Home / 20,773.41-28,667.19-12,815.61

Finding the Fourth Proportional to 20,773.41, 28,667.19 and 12,815.61

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Solution

The fourth proportional to 20,773.41, 28,667.19 and 12,815.61 is: 17,685.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.41 : 28,667.19 = 12,815.61 : x
  2. Step 2: Convert to fraction form
    20,773.41/28,667.19 = 12,815.61/x
  3. Step 3: Cross multiply
    20,773.41x = 28,667.19 × 12,815.61
  4. Step 4: Simplify right side
    20,773.41x = 367,387,526.84
  5. Step 5: Solve for x
    x = 367,387,526.84/20,773.41
  6. Step 6: Final answer
    x = 17,685.47

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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.