Home / 20,823.11-31,207.47-18,184.35

Finding the Fourth Proportional to 20,823.11, 31,207.47 and 18,184.35

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Solution

The fourth proportional to 20,823.11, 31,207.47 and 18,184.35 is: 27,252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.11 : 31,207.47 = 18,184.35 : x
  2. Step 2: Convert to fraction form
    20,823.11/31,207.47 = 18,184.35/x
  3. Step 3: Cross multiply
    20,823.11x = 31,207.47 × 18,184.35
  4. Step 4: Simplify right side
    20,823.11x = 567,487,557.09
  5. Step 5: Solve for x
    x = 567,487,557.09/20,823.11
  6. Step 6: Final answer
    x = 27,252.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.