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Finding the Fourth Proportional to 12,641.21, 17,444.72 and 6,976.00

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Solution

The fourth proportional to 12,641.21, 17,444.72 and 6,976.00 is: 9,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.21 : 17,444.72 = 6,976.00 : x
  2. Step 2: Convert to fraction form
    12,641.21/17,444.72 = 6,976.00/x
  3. Step 3: Cross multiply
    12,641.21x = 17,444.72 × 6,976.00
  4. Step 4: Simplify right side
    12,641.21x = 121,694,340.55
  5. Step 5: Solve for x
    x = 121,694,340.55/12,641.21
  6. Step 6: Final answer
    x = 9,626.80

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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.