Home / 20,963.01-28,928.70-11,531.37

Finding the Fourth Proportional to 20,963.01, 28,928.70 and 11,531.37

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Solution

The fourth proportional to 20,963.01, 28,928.70 and 11,531.37 is: 15,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.01 : 28,928.70 = 11,531.37 : x
  2. Step 2: Convert to fraction form
    20,963.01/28,928.70 = 11,531.37/x
  3. Step 3: Cross multiply
    20,963.01x = 28,928.70 × 11,531.37
  4. Step 4: Simplify right side
    20,963.01x = 333,587,543.32
  5. Step 5: Solve for x
    x = 333,587,543.32/20,963.01
  6. Step 6: Final answer
    x = 15,913.15

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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.