Home / 11,939.50-16,476.84-7,221.04

Finding the Fourth Proportional to 11,939.50, 16,476.84 and 7,221.04

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Solution

The fourth proportional to 11,939.50, 16,476.84 and 7,221.04 is: 9,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.50 : 16,476.84 = 7,221.04 : x
  2. Step 2: Convert to fraction form
    11,939.50/16,476.84 = 7,221.04/x
  3. Step 3: Cross multiply
    11,939.50x = 16,476.84 × 7,221.04
  4. Step 4: Simplify right side
    11,939.50x = 118,979,920.71
  5. Step 5: Solve for x
    x = 118,979,920.71/11,939.50
  6. Step 6: Final answer
    x = 9,965.23

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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.