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Finding the Fourth Proportional to 12,454.62, 17,187.40 and 6,865.62

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Solution

The fourth proportional to 12,454.62, 17,187.40 and 6,865.62 is: 9,474.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.62 : 17,187.40 = 6,865.62 : x
  2. Step 2: Convert to fraction form
    12,454.62/17,187.40 = 6,865.62/x
  3. Step 3: Cross multiply
    12,454.62x = 17,187.40 × 6,865.62
  4. Step 4: Simplify right side
    12,454.62x = 118,002,157.19
  5. Step 5: Solve for x
    x = 118,002,157.19/12,454.62
  6. Step 6: Final answer
    x = 9,474.57

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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.