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Finding the Fourth Proportional to 11,158.99, 15,402.11 and 7,579.91

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Solution

The fourth proportional to 11,158.99, 15,402.11 and 7,579.91 is: 10,462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.99 : 15,402.11 = 7,579.91 : x
  2. Step 2: Convert to fraction form
    11,158.99/15,402.11 = 7,579.91/x
  3. Step 3: Cross multiply
    11,158.99x = 15,402.11 × 7,579.91
  4. Step 4: Simplify right side
    11,158.99x = 116,746,608.22
  5. Step 5: Solve for x
    x = 116,746,608.22/11,158.99
  6. Step 6: Final answer
    x = 10,462.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.