Home / 20,531.14-28,333.02-11,099.70

Finding the Fourth Proportional to 20,531.14, 28,333.02 and 11,099.70

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Solution

The fourth proportional to 20,531.14, 28,333.02 and 11,099.70 is: 15,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.14 : 28,333.02 = 11,099.70 : x
  2. Step 2: Convert to fraction form
    20,531.14/28,333.02 = 11,099.70/x
  3. Step 3: Cross multiply
    20,531.14x = 28,333.02 × 11,099.70
  4. Step 4: Simplify right side
    20,531.14x = 314,488,022.09
  5. Step 5: Solve for x
    x = 314,488,022.09/20,531.14
  6. Step 6: Final answer
    x = 15,317.61

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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.