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Finding the Fourth Proportional to 15,137.79, 22,699.05 and 8,899.79

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Solution

The fourth proportional to 15,137.79, 22,699.05 and 8,899.79 is: 13,345.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.79 : 22,699.05 = 8,899.79 : x
  2. Step 2: Convert to fraction form
    15,137.79/22,699.05 = 8,899.79/x
  3. Step 3: Cross multiply
    15,137.79x = 22,699.05 × 8,899.79
  4. Step 4: Simplify right side
    15,137.79x = 202,016,664.70
  5. Step 5: Solve for x
    x = 202,016,664.70/15,137.79
  6. Step 6: Final answer
    x = 13,345.19

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Why These Related Problems?

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