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Finding the Fourth Proportional to 12,409.92, 17,125.68 and 7,104.48

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Solution

The fourth proportional to 12,409.92, 17,125.68 and 7,104.48 is: 9,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.92 : 17,125.68 = 7,104.48 : x
  2. Step 2: Convert to fraction form
    12,409.92/17,125.68 = 7,104.48/x
  3. Step 3: Cross multiply
    12,409.92x = 17,125.68 × 7,104.48
  4. Step 4: Simplify right side
    12,409.92x = 121,669,051.05
  5. Step 5: Solve for x
    x = 121,669,051.05/12,409.92
  6. Step 6: Final answer
    x = 9,804.18

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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.