Home / 9,942.30-13,720.74-5,694.02

Finding the Fourth Proportional to 9,942.30, 13,720.74 and 5,694.02

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Solution

The fourth proportional to 9,942.30, 13,720.74 and 5,694.02 is: 7,857.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,942.30 : 13,720.74 = 5,694.02 : x
  2. Step 2: Convert to fraction form
    9,942.30/13,720.74 = 5,694.02/x
  3. Step 3: Cross multiply
    9,942.30x = 13,720.74 × 5,694.02
  4. Step 4: Simplify right side
    9,942.30x = 78,126,167.97
  5. Step 5: Solve for x
    x = 78,126,167.97/9,942.30
  6. Step 6: Final answer
    x = 7,857.96

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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.