Home / 11,139.60-16,710.53-4,121.49

Finding the Fourth Proportional to 11,139.60, 16,710.53 and 4,121.49

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Solution

The fourth proportional to 11,139.60, 16,710.53 and 4,121.49 is: 6,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.60 : 16,710.53 = 4,121.49 : x
  2. Step 2: Convert to fraction form
    11,139.60/16,710.53 = 4,121.49/x
  3. Step 3: Cross multiply
    11,139.60x = 16,710.53 × 4,121.49
  4. Step 4: Simplify right side
    11,139.60x = 68,872,261.68
  5. Step 5: Solve for x
    x = 68,872,261.68/11,139.60
  6. Step 6: Final answer
    x = 6,182.65

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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.