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Finding the Fourth Proportional to 18,777.60, 25,909.20 and 14,293.44

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Solution

The fourth proportional to 18,777.60, 25,909.20 and 14,293.44 is: 19,721.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.60 : 25,909.20 = 14,293.44 : x
  2. Step 2: Convert to fraction form
    18,777.60/25,909.20 = 14,293.44/x
  3. Step 3: Cross multiply
    18,777.60x = 25,909.20 × 14,293.44
  4. Step 4: Simplify right side
    18,777.60x = 370,331,595.65
  5. Step 5: Solve for x
    x = 370,331,595.65/18,777.60
  6. Step 6: Final answer
    x = 19,721.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.