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Finding the Fourth Proportional to 18,740.16, 25,868.16 and 11,292.48

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Solution

The fourth proportional to 18,740.16, 25,868.16 and 11,292.48 is: 15,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.16 : 25,868.16 = 11,292.48 : x
  2. Step 2: Convert to fraction form
    18,740.16/25,868.16 = 11,292.48/x
  3. Step 3: Cross multiply
    18,740.16x = 25,868.16 × 11,292.48
  4. Step 4: Simplify right side
    18,740.16x = 292,115,679.44
  5. Step 5: Solve for x
    x = 292,115,679.44/18,740.16
  6. Step 6: Final answer
    x = 15,587.68

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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.