Home / 9,680.10-13,354.56-6,321.75

Finding the Fourth Proportional to 9,680.10, 13,354.56 and 6,321.75

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Solution

The fourth proportional to 9,680.10, 13,354.56 and 6,321.75 is: 8,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,680.10 : 13,354.56 = 6,321.75 : x
  2. Step 2: Convert to fraction form
    9,680.10/13,354.56 = 6,321.75/x
  3. Step 3: Cross multiply
    9,680.10x = 13,354.56 × 6,321.75
  4. Step 4: Simplify right side
    9,680.10x = 84,424,189.68
  5. Step 5: Solve for x
    x = 84,424,189.68/9,680.10
  6. Step 6: Final answer
    x = 8,721.42

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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.