Home / 9,912.39-13,679.29-5,435.88

Finding the Fourth Proportional to 9,912.39, 13,679.29 and 5,435.88

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Solution

The fourth proportional to 9,912.39, 13,679.29 and 5,435.88 is: 7,501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.39 : 13,679.29 = 5,435.88 : x
  2. Step 2: Convert to fraction form
    9,912.39/13,679.29 = 5,435.88/x
  3. Step 3: Cross multiply
    9,912.39x = 13,679.29 × 5,435.88
  4. Step 4: Simplify right side
    9,912.39x = 74,358,919.13
  5. Step 5: Solve for x
    x = 74,358,919.13/9,912.39
  6. Step 6: Final answer
    x = 7,501.61

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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.