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Finding the Fourth Proportional to 19,159.84, 28,701.36 and 8,757.28

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Solution

The fourth proportional to 19,159.84, 28,701.36 and 8,757.28 is: 13,118.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.84 : 28,701.36 = 8,757.28 : x
  2. Step 2: Convert to fraction form
    19,159.84/28,701.36 = 8,757.28/x
  3. Step 3: Cross multiply
    19,159.84x = 28,701.36 × 8,757.28
  4. Step 4: Simplify right side
    19,159.84x = 251,345,845.90
  5. Step 5: Solve for x
    x = 251,345,845.90/19,159.84
  6. Step 6: Final answer
    x = 13,118.37

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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.