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Finding the Fourth Proportional to 18,852.48, 28,267.20 and 17,078.40

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Solution

The fourth proportional to 18,852.48, 28,267.20 and 17,078.40 is: 25,607.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.48 : 28,267.20 = 17,078.40 : x
  2. Step 2: Convert to fraction form
    18,852.48/28,267.20 = 17,078.40/x
  3. Step 3: Cross multiply
    18,852.48x = 28,267.20 × 17,078.40
  4. Step 4: Simplify right side
    18,852.48x = 482,758,548.48
  5. Step 5: Solve for x
    x = 482,758,548.48/18,852.48
  6. Step 6: Final answer
    x = 25,607.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.