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Finding the Fourth Proportional to 18,773.75, 25,907.78 and 10,816.72

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Solution

The fourth proportional to 18,773.75, 25,907.78 and 10,816.72 is: 14,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.75 : 25,907.78 = 10,816.72 : x
  2. Step 2: Convert to fraction form
    18,773.75/25,907.78 = 10,816.72/x
  3. Step 3: Cross multiply
    18,773.75x = 25,907.78 × 10,816.72
  4. Step 4: Simplify right side
    18,773.75x = 280,237,202.08
  5. Step 5: Solve for x
    x = 280,237,202.08/18,773.75
  6. Step 6: Final answer
    x = 14,927.08

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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.