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Finding the Fourth Proportional to 10,110, 15,157.32 and 5,486.64

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Solution

The fourth proportional to 10,110, 15,157.32 and 5,486.64 is: 8,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,110 : 15,157.32 = 5,486.64 : x
  2. Step 2: Convert to fraction form
    10,110/15,157.32 = 5,486.64/x
  3. Step 3: Cross multiply
    10,110x = 15,157.32 × 5,486.64
  4. Step 4: Simplify right side
    10,110x = 83,162,758.20
  5. Step 5: Solve for x
    x = 83,162,758.20/10,110
  6. Step 6: Final answer
    x = 8,225.79

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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.