Home / 13,930.56-19,221.66-7,961.04

Finding the Fourth Proportional to 13,930.56, 19,221.66 and 7,961.04

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Solution

The fourth proportional to 13,930.56, 19,221.66 and 7,961.04 is: 10,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.56 : 19,221.66 = 7,961.04 : x
  2. Step 2: Convert to fraction form
    13,930.56/19,221.66 = 7,961.04/x
  3. Step 3: Cross multiply
    13,930.56x = 19,221.66 × 7,961.04
  4. Step 4: Simplify right side
    13,930.56x = 153,024,404.13
  5. Step 5: Solve for x
    x = 153,024,404.13/13,930.56
  6. Step 6: Final answer
    x = 10,984.80

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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.