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Finding the Fourth Proportional to 18,573.66, 25,620.03 and 11,399.76

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Solution

The fourth proportional to 18,573.66, 25,620.03 and 11,399.76 is: 15,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.66 : 25,620.03 = 11,399.76 : x
  2. Step 2: Convert to fraction form
    18,573.66/25,620.03 = 11,399.76/x
  3. Step 3: Cross multiply
    18,573.66x = 25,620.03 × 11,399.76
  4. Step 4: Simplify right side
    18,573.66x = 292,062,193.19
  5. Step 5: Solve for x
    x = 292,062,193.19/18,573.66
  6. Step 6: Final answer
    x = 15,724.54

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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.