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Finding the Fourth Proportional to 11,686, 17,533.32 and 6,139.12

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Solution

The fourth proportional to 11,686, 17,533.32 and 6,139.12 is: 9,210.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686 : 17,533.32 = 6,139.12 : x
  2. Step 2: Convert to fraction form
    11,686/17,533.32 = 6,139.12/x
  3. Step 3: Cross multiply
    11,686x = 17,533.32 × 6,139.12
  4. Step 4: Simplify right side
    11,686x = 107,639,155.48
  5. Step 5: Solve for x
    x = 107,639,155.48/11,686
  6. Step 6: Final answer
    x = 9,210.95

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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.