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Finding the Fourth Proportional to 11,327.68, 15,631.86 and 6,359.68

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Solution

The fourth proportional to 11,327.68, 15,631.86 and 6,359.68 is: 8,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,327.68 : 15,631.86 = 6,359.68 : x
  2. Step 2: Convert to fraction form
    11,327.68/15,631.86 = 6,359.68/x
  3. Step 3: Cross multiply
    11,327.68x = 15,631.86 × 6,359.68
  4. Step 4: Simplify right side
    11,327.68x = 99,413,627.40
  5. Step 5: Solve for x
    x = 99,413,627.40/11,327.68
  6. Step 6: Final answer
    x = 8,776.17

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1.5x scale

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.