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Finding the Fourth Proportional to 12,693.12, 19,068.88 and 9,004.48

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Solution

The fourth proportional to 12,693.12, 19,068.88 and 9,004.48 is: 13,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.12 : 19,068.88 = 9,004.48 : x
  2. Step 2: Convert to fraction form
    12,693.12/19,068.88 = 9,004.48/x
  3. Step 3: Cross multiply
    12,693.12x = 19,068.88 × 9,004.48
  4. Step 4: Simplify right side
    12,693.12x = 171,705,348.58
  5. Step 5: Solve for x
    x = 171,705,348.58/12,693.12
  6. Step 6: Final answer
    x = 13,527.43

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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.