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Finding the Fourth Proportional to 15,199.75, 20,975.52 and 8,484.94

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Solution

The fourth proportional to 15,199.75, 20,975.52 and 8,484.94 is: 11,709.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,199.75 : 20,975.52 = 8,484.94 : x
  2. Step 2: Convert to fraction form
    15,199.75/20,975.52 = 8,484.94/x
  3. Step 3: Cross multiply
    15,199.75x = 20,975.52 × 8,484.94
  4. Step 4: Simplify right side
    15,199.75x = 177,976,028.67
  5. Step 5: Solve for x
    x = 177,976,028.67/15,199.75
  6. Step 6: Final answer
    x = 11,709.14

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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.