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Finding the Fourth Proportional to 12,409.70, 17,118.44 and 7,626.31

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Solution

The fourth proportional to 12,409.70, 17,118.44 and 7,626.31 is: 10,520.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.70 : 17,118.44 = 7,626.31 : x
  2. Step 2: Convert to fraction form
    12,409.70/17,118.44 = 7,626.31/x
  3. Step 3: Cross multiply
    12,409.70x = 17,118.44 × 7,626.31
  4. Step 4: Simplify right side
    12,409.70x = 130,550,530.16
  5. Step 5: Solve for x
    x = 130,550,530.16/12,409.70
  6. Step 6: Final answer
    x = 10,520.04

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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.