Home / 12,721.46-19,081.04-3,955.50

Finding the Fourth Proportional to 12,721.46, 19,081.04 and 3,955.50

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Solution

The fourth proportional to 12,721.46, 19,081.04 and 3,955.50 is: 5,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.46 : 19,081.04 = 3,955.50 : x
  2. Step 2: Convert to fraction form
    12,721.46/19,081.04 = 3,955.50/x
  3. Step 3: Cross multiply
    12,721.46x = 19,081.04 × 3,955.50
  4. Step 4: Simplify right side
    12,721.46x = 75,475,033.94
  5. Step 5: Solve for x
    x = 75,475,033.94/12,721.46
  6. Step 6: Final answer
    x = 5,932.89

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Double scale
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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.