Home / 13,386.58-18,481.92-8,608.66

Finding the Fourth Proportional to 13,386.58, 18,481.92 and 8,608.66

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Solution

The fourth proportional to 13,386.58, 18,481.92 and 8,608.66 is: 11,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.58 : 18,481.92 = 8,608.66 : x
  2. Step 2: Convert to fraction form
    13,386.58/18,481.92 = 8,608.66/x
  3. Step 3: Cross multiply
    13,386.58x = 18,481.92 × 8,608.66
  4. Step 4: Simplify right side
    13,386.58x = 159,104,565.43
  5. Step 5: Solve for x
    x = 159,104,565.43/13,386.58
  6. Step 6: Final answer
    x = 11,885.38

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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.