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Finding the Fourth Proportional to 18,803.29, 25,947.65 and 11,253.78

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Solution

The fourth proportional to 18,803.29, 25,947.65 and 11,253.78 is: 15,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.29 : 25,947.65 = 11,253.78 : x
  2. Step 2: Convert to fraction form
    18,803.29/25,947.65 = 11,253.78/x
  3. Step 3: Cross multiply
    18,803.29x = 25,947.65 × 11,253.78
  4. Step 4: Simplify right side
    18,803.29x = 292,009,144.62
  5. Step 5: Solve for x
    x = 292,009,144.62/18,803.29
  6. Step 6: Final answer
    x = 15,529.68

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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.