Home / 11,220.15-16,848.45-8,121.90

Finding the Fourth Proportional to 11,220.15, 16,848.45 and 8,121.90

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Solution

The fourth proportional to 11,220.15, 16,848.45 and 8,121.90 is: 12,196.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.15 : 16,848.45 = 8,121.90 : x
  2. Step 2: Convert to fraction form
    11,220.15/16,848.45 = 8,121.90/x
  3. Step 3: Cross multiply
    11,220.15x = 16,848.45 × 8,121.90
  4. Step 4: Simplify right side
    11,220.15x = 136,841,426.06
  5. Step 5: Solve for x
    x = 136,841,426.06/11,220.15
  6. Step 6: Final answer
    x = 12,196.04

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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.