Home / 15,179.72-20,948.12-8,465.80

Finding the Fourth Proportional to 15,179.72, 20,948.12 and 8,465.80

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Solution

The fourth proportional to 15,179.72, 20,948.12 and 8,465.80 is: 11,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.72 : 20,948.12 = 8,465.80 : x
  2. Step 2: Convert to fraction form
    15,179.72/20,948.12 = 8,465.80/x
  3. Step 3: Cross multiply
    15,179.72x = 20,948.12 × 8,465.80
  4. Step 4: Simplify right side
    15,179.72x = 177,342,594.30
  5. Step 5: Solve for x
    x = 177,342,594.30/15,179.72
  6. Step 6: Final answer
    x = 11,682.86

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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.