Home / 12,972.35-17,903.19-7,939.92

Finding the Fourth Proportional to 12,972.35, 17,903.19 and 7,939.92

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Solution

The fourth proportional to 12,972.35, 17,903.19 and 7,939.92 is: 10,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.35 : 17,903.19 = 7,939.92 : x
  2. Step 2: Convert to fraction form
    12,972.35/17,903.19 = 7,939.92/x
  3. Step 3: Cross multiply
    12,972.35x = 17,903.19 × 7,939.92
  4. Step 4: Simplify right side
    12,972.35x = 142,149,856.65
  5. Step 5: Solve for x
    x = 142,149,856.65/12,972.35
  6. Step 6: Final answer
    x = 10,957.92

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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.