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Finding the Fourth Proportional to 10,913.03, 15,056.31 and 6,662.55

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Solution

The fourth proportional to 10,913.03, 15,056.31 and 6,662.55 is: 9,192.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.03 : 15,056.31 = 6,662.55 : x
  2. Step 2: Convert to fraction form
    10,913.03/15,056.31 = 6,662.55/x
  3. Step 3: Cross multiply
    10,913.03x = 15,056.31 × 6,662.55
  4. Step 4: Simplify right side
    10,913.03x = 100,313,499.64
  5. Step 5: Solve for x
    x = 100,313,499.64/10,913.03
  6. Step 6: Final answer
    x = 9,192.09

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Why These Related Problems?

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