Home / 9,912.70-13,679.49-5,436.34

Finding the Fourth Proportional to 9,912.70, 13,679.49 and 5,436.34

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Solution

The fourth proportional to 9,912.70, 13,679.49 and 5,436.34 is: 7,502.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.70 : 13,679.49 = 5,436.34 : x
  2. Step 2: Convert to fraction form
    9,912.70/13,679.49 = 5,436.34/x
  3. Step 3: Cross multiply
    9,912.70x = 13,679.49 × 5,436.34
  4. Step 4: Simplify right side
    9,912.70x = 74,366,358.67
  5. Step 5: Solve for x
    x = 74,366,358.67/9,912.70
  6. Step 6: Final answer
    x = 7,502.13

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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.