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Finding the Fourth Proportional to 12,928.04, 19,392.06 and 3,694.12

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Solution

The fourth proportional to 12,928.04, 19,392.06 and 3,694.12 is: 5,541.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.04 : 19,392.06 = 3,694.12 : x
  2. Step 2: Convert to fraction form
    12,928.04/19,392.06 = 3,694.12/x
  3. Step 3: Cross multiply
    12,928.04x = 19,392.06 × 3,694.12
  4. Step 4: Simplify right side
    12,928.04x = 71,636,596.69
  5. Step 5: Solve for x
    x = 71,636,596.69/12,928.04
  6. Step 6: Final answer
    x = 5,541.18

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.