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Finding the Fourth Proportional to 18,772.01, 25,902.80 and 11,216.74

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Solution

The fourth proportional to 18,772.01, 25,902.80 and 11,216.74 is: 15,477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.01 : 25,902.80 = 11,216.74 : x
  2. Step 2: Convert to fraction form
    18,772.01/25,902.80 = 11,216.74/x
  3. Step 3: Cross multiply
    18,772.01x = 25,902.80 × 11,216.74
  4. Step 4: Simplify right side
    18,772.01x = 290,544,787.27
  5. Step 5: Solve for x
    x = 290,544,787.27/18,772.01
  6. Step 6: Final answer
    x = 15,477.56

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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.