Home / 9,690.19-13,376.52-8,205.79

Finding the Fourth Proportional to 9,690.19, 13,376.52 and 8,205.79

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Solution

The fourth proportional to 9,690.19, 13,376.52 and 8,205.79 is: 11,327.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,690.19 : 13,376.52 = 8,205.79 : x
  2. Step 2: Convert to fraction form
    9,690.19/13,376.52 = 8,205.79/x
  3. Step 3: Cross multiply
    9,690.19x = 13,376.52 × 8,205.79
  4. Step 4: Simplify right side
    9,690.19x = 109,764,806.14
  5. Step 5: Solve for x
    x = 109,764,806.14/9,690.19
  6. Step 6: Final answer
    x = 11,327.42

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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.