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Finding the Fourth Proportional to 18,842.99, 28,265.09 and 9,477.90

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Solution

The fourth proportional to 18,842.99, 28,265.09 and 9,477.90 is: 14,217.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.99 : 28,265.09 = 9,477.90 : x
  2. Step 2: Convert to fraction form
    18,842.99/28,265.09 = 9,477.90/x
  3. Step 3: Cross multiply
    18,842.99x = 28,265.09 × 9,477.90
  4. Step 4: Simplify right side
    18,842.99x = 267,893,649.12
  5. Step 5: Solve for x
    x = 267,893,649.12/18,842.99
  6. Step 6: Final answer
    x = 14,217.16

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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.