Home / 20,626.54-28,449.91-18,930.51

Finding the Fourth Proportional to 20,626.54, 28,449.91 and 18,930.51

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Solution

The fourth proportional to 20,626.54, 28,449.91 and 18,930.51 is: 26,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.54 : 28,449.91 = 18,930.51 : x
  2. Step 2: Convert to fraction form
    20,626.54/28,449.91 = 18,930.51/x
  3. Step 3: Cross multiply
    20,626.54x = 28,449.91 × 18,930.51
  4. Step 4: Simplify right side
    20,626.54x = 538,571,305.75
  5. Step 5: Solve for x
    x = 538,571,305.75/20,626.54
  6. Step 6: Final answer
    x = 26,110.60

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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.