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Finding the Fourth Proportional to 15,014.73, 20,719.74 and 8,299.92

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Solution

The fourth proportional to 15,014.73, 20,719.74 and 8,299.92 is: 11,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.73 : 20,719.74 = 8,299.92 : x
  2. Step 2: Convert to fraction form
    15,014.73/20,719.74 = 8,299.92/x
  3. Step 3: Cross multiply
    15,014.73x = 20,719.74 × 8,299.92
  4. Step 4: Simplify right side
    15,014.73x = 171,972,184.42
  5. Step 5: Solve for x
    x = 171,972,184.42/15,014.73
  6. Step 6: Final answer
    x = 11,453.56

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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.