Home / 20,531.26-28,333.18-11,099.82

Finding the Fourth Proportional to 20,531.26, 28,333.18 and 11,099.82

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Solution

The fourth proportional to 20,531.26, 28,333.18 and 11,099.82 is: 15,317.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.26 : 28,333.18 = 11,099.82 : x
  2. Step 2: Convert to fraction form
    20,531.26/28,333.18 = 11,099.82/x
  3. Step 3: Cross multiply
    20,531.26x = 28,333.18 × 11,099.82
  4. Step 4: Simplify right side
    20,531.26x = 314,493,142.53
  5. Step 5: Solve for x
    x = 314,493,142.53/20,531.26
  6. Step 6: Final answer
    x = 15,317.77

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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.