Home / 11,939.96-16,478.66-7,224.28

Finding the Fourth Proportional to 11,939.96, 16,478.66 and 7,224.28

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Solution

The fourth proportional to 11,939.96, 16,478.66 and 7,224.28 is: 9,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.96 : 16,478.66 = 7,224.28 : x
  2. Step 2: Convert to fraction form
    11,939.96/16,478.66 = 7,224.28/x
  3. Step 3: Cross multiply
    11,939.96x = 16,478.66 × 7,224.28
  4. Step 4: Simplify right side
    11,939.96x = 119,046,453.86
  5. Step 5: Solve for x
    x = 119,046,453.86/11,939.96
  6. Step 6: Final answer
    x = 9,970.42

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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.