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Finding the Fourth Proportional to 12,505.62, 17,258.16 and 6,840.69

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Solution

The fourth proportional to 12,505.62, 17,258.16 and 6,840.69 is: 9,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.62 : 17,258.16 = 6,840.69 : x
  2. Step 2: Convert to fraction form
    12,505.62/17,258.16 = 6,840.69/x
  3. Step 3: Cross multiply
    12,505.62x = 17,258.16 × 6,840.69
  4. Step 4: Simplify right side
    12,505.62x = 118,057,722.53
  5. Step 5: Solve for x
    x = 118,057,722.53/12,505.62
  6. Step 6: Final answer
    x = 9,440.37

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Half scale
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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.