Home / 20,832.30-28,746.54-11,881.80

Finding the Fourth Proportional to 20,832.30, 28,746.54 and 11,881.80

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Solution

The fourth proportional to 20,832.30, 28,746.54 and 11,881.80 is: 16,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.30 : 28,746.54 = 11,881.80 : x
  2. Step 2: Convert to fraction form
    20,832.30/28,746.54 = 11,881.80/x
  3. Step 3: Cross multiply
    20,832.30x = 28,746.54 × 11,881.80
  4. Step 4: Simplify right side
    20,832.30x = 341,560,638.97
  5. Step 5: Solve for x
    x = 341,560,638.97/20,832.30
  6. Step 6: Final answer
    x = 16,395.72

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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.