Home / 20,099.85-27,737.82-11,148.72

Finding the Fourth Proportional to 20,099.85, 27,737.82 and 11,148.72

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Solution

The fourth proportional to 20,099.85, 27,737.82 and 11,148.72 is: 15,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.85 : 27,737.82 = 11,148.72 : x
  2. Step 2: Convert to fraction form
    20,099.85/27,737.82 = 11,148.72/x
  3. Step 3: Cross multiply
    20,099.85x = 27,737.82 × 11,148.72
  4. Step 4: Simplify right side
    20,099.85x = 309,241,188.59
  5. Step 5: Solve for x
    x = 309,241,188.59/20,099.85
  6. Step 6: Final answer
    x = 15,385.25

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1.5x scale

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.