Home / 11,120.91-16,686-4,877.70

Finding the Fourth Proportional to 11,120.91, 16,686 and 4,877.70

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Solution

The fourth proportional to 11,120.91, 16,686 and 4,877.70 is: 7,318.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.91 : 16,686 = 4,877.70 : x
  2. Step 2: Convert to fraction form
    11,120.91/16,686 = 4,877.70/x
  3. Step 3: Cross multiply
    11,120.91x = 16,686 × 4,877.70
  4. Step 4: Simplify right side
    11,120.91x = 81,389,302.20
  5. Step 5: Solve for x
    x = 81,389,302.20/11,120.91
  6. Step 6: Final answer
    x = 7,318.58

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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.