Home / 20,531.01-28,333.21-11,576.78

Finding the Fourth Proportional to 20,531.01, 28,333.21 and 11,576.78

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Solution

The fourth proportional to 20,531.01, 28,333.21 and 11,576.78 is: 15,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.01 : 28,333.21 = 11,576.78 : x
  2. Step 2: Convert to fraction form
    20,531.01/28,333.21 = 11,576.78/x
  3. Step 3: Cross multiply
    20,531.01x = 28,333.21 × 11,576.78
  4. Step 4: Simplify right side
    20,531.01x = 328,007,338.86
  5. Step 5: Solve for x
    x = 328,007,338.86/20,531.01
  6. Step 6: Final answer
    x = 15,976.19

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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.