Home / 15,169.90-20,934.57-8,455.96

Finding the Fourth Proportional to 15,169.90, 20,934.57 and 8,455.96

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Solution

The fourth proportional to 15,169.90, 20,934.57 and 8,455.96 is: 11,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.90 : 20,934.57 = 8,455.96 : x
  2. Step 2: Convert to fraction form
    15,169.90/20,934.57 = 8,455.96/x
  3. Step 3: Cross multiply
    15,169.90x = 20,934.57 × 8,455.96
  4. Step 4: Simplify right side
    15,169.90x = 177,021,886.54
  5. Step 5: Solve for x
    x = 177,021,886.54/15,169.90
  6. Step 6: Final answer
    x = 11,669.29

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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.