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Finding the Fourth Proportional to 18,782.73, 25,917.12 and 11,232.18

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Solution

The fourth proportional to 18,782.73, 25,917.12 and 11,232.18 is: 15,498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.73 : 25,917.12 = 11,232.18 : x
  2. Step 2: Convert to fraction form
    18,782.73/25,917.12 = 11,232.18/x
  3. Step 3: Cross multiply
    18,782.73x = 25,917.12 × 11,232.18
  4. Step 4: Simplify right side
    18,782.73x = 291,105,756.92
  5. Step 5: Solve for x
    x = 291,105,756.92/18,782.73
  6. Step 6: Final answer
    x = 15,498.59

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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.