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Finding the Fourth Proportional to 18,777.60, 25,963.20 and 16,444.80

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Solution

The fourth proportional to 18,777.60, 25,963.20 and 16,444.80 is: 22,737.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.60 : 25,963.20 = 16,444.80 : x
  2. Step 2: Convert to fraction form
    18,777.60/25,963.20 = 16,444.80/x
  3. Step 3: Cross multiply
    18,777.60x = 25,963.20 × 16,444.80
  4. Step 4: Simplify right side
    18,777.60x = 426,959,631.36
  5. Step 5: Solve for x
    x = 426,959,631.36/18,777.60
  6. Step 6: Final answer
    x = 22,737.71

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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.