Home / 20,963.03-28,928.34-11,531.57

Finding the Fourth Proportional to 20,963.03, 28,928.34 and 11,531.57

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Solution

The fourth proportional to 20,963.03, 28,928.34 and 11,531.57 is: 15,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.03 : 28,928.34 = 11,531.57 : x
  2. Step 2: Convert to fraction form
    20,963.03/28,928.34 = 11,531.57/x
  3. Step 3: Cross multiply
    20,963.03x = 28,928.34 × 11,531.57
  4. Step 4: Simplify right side
    20,963.03x = 333,589,033.05
  5. Step 5: Solve for x
    x = 333,589,033.05/20,963.03
  6. Step 6: Final answer
    x = 15,913.21

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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.