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Finding the Fourth Proportional to 18,587.48, 25,650.14 and 10,089.20

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Solution

The fourth proportional to 18,587.48, 25,650.14 and 10,089.20 is: 13,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.48 : 25,650.14 = 10,089.20 : x
  2. Step 2: Convert to fraction form
    18,587.48/25,650.14 = 10,089.20/x
  3. Step 3: Cross multiply
    18,587.48x = 25,650.14 × 10,089.20
  4. Step 4: Simplify right side
    18,587.48x = 258,789,392.49
  5. Step 5: Solve for x
    x = 258,789,392.49/18,587.48
  6. Step 6: Final answer
    x = 13,922.78

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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.