Home / 20,822.03-28,736.67-13,275.26

Finding the Fourth Proportional to 20,822.03, 28,736.67 and 13,275.26

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Solution

The fourth proportional to 20,822.03, 28,736.67 and 13,275.26 is: 18,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.03 : 28,736.67 = 13,275.26 : x
  2. Step 2: Convert to fraction form
    20,822.03/28,736.67 = 13,275.26/x
  3. Step 3: Cross multiply
    20,822.03x = 28,736.67 × 13,275.26
  4. Step 4: Simplify right side
    20,822.03x = 381,486,622.10
  5. Step 5: Solve for x
    x = 381,486,622.10/20,822.03
  6. Step 6: Final answer
    x = 18,321.30

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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.