Home / 15,110.90-20,853.76-8,396.54

Finding the Fourth Proportional to 15,110.90, 20,853.76 and 8,396.54

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Solution

The fourth proportional to 15,110.90, 20,853.76 and 8,396.54 is: 11,587.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.90 : 20,853.76 = 8,396.54 : x
  2. Step 2: Convert to fraction form
    15,110.90/20,853.76 = 8,396.54/x
  3. Step 3: Cross multiply
    15,110.90x = 20,853.76 × 8,396.54
  4. Step 4: Simplify right side
    15,110.90x = 175,099,429.99
  5. Step 5: Solve for x
    x = 175,099,429.99/15,110.90
  6. Step 6: Final answer
    x = 11,587.62

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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.