Home / 15,055.54-20,779.22-8,680.97

Finding the Fourth Proportional to 15,055.54, 20,779.22 and 8,680.97

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Solution

The fourth proportional to 15,055.54, 20,779.22 and 8,680.97 is: 11,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.54 : 20,779.22 = 8,680.97 : x
  2. Step 2: Convert to fraction form
    15,055.54/20,779.22 = 8,680.97/x
  3. Step 3: Cross multiply
    15,055.54x = 20,779.22 × 8,680.97
  4. Step 4: Simplify right side
    15,055.54x = 180,383,785.44
  5. Step 5: Solve for x
    x = 180,383,785.44/15,055.54
  6. Step 6: Final answer
    x = 11,981.22

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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.