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Finding the Fourth Proportional to 10,962, 15,128.10 and 6,246.72

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Solution

The fourth proportional to 10,962, 15,128.10 and 6,246.72 is: 8,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,962 : 15,128.10 = 6,246.72 : x
  2. Step 2: Convert to fraction form
    10,962/15,128.10 = 6,246.72/x
  3. Step 3: Cross multiply
    10,962x = 15,128.10 × 6,246.72
  4. Step 4: Simplify right side
    10,962x = 94,501,004.83
  5. Step 5: Solve for x
    x = 94,501,004.83/10,962
  6. Step 6: Final answer
    x = 8,620.78

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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.