Home / 9,912.13-13,679.09-5,435.89

Finding the Fourth Proportional to 9,912.13, 13,679.09 and 5,435.89

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Solution

The fourth proportional to 9,912.13, 13,679.09 and 5,435.89 is: 7,501.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.13 : 13,679.09 = 5,435.89 : x
  2. Step 2: Convert to fraction form
    9,912.13/13,679.09 = 5,435.89/x
  3. Step 3: Cross multiply
    9,912.13x = 13,679.09 × 5,435.89
  4. Step 4: Simplify right side
    9,912.13x = 74,358,028.54
  5. Step 5: Solve for x
    x = 74,358,028.54/9,912.13
  6. Step 6: Final answer
    x = 7,501.72

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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.