Home / 13,238.31-18,268.79-7,269.85

Finding the Fourth Proportional to 13,238.31, 18,268.79 and 7,269.85

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Solution

The fourth proportional to 13,238.31, 18,268.79 and 7,269.85 is: 10,032.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.31 : 18,268.79 = 7,269.85 : x
  2. Step 2: Convert to fraction form
    13,238.31/18,268.79 = 7,269.85/x
  3. Step 3: Cross multiply
    13,238.31x = 18,268.79 × 7,269.85
  4. Step 4: Simplify right side
    13,238.31x = 132,811,390.36
  5. Step 5: Solve for x
    x = 132,811,390.36/13,238.31
  6. Step 6: Final answer
    x = 10,032.35

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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.