Home / 13,238.10-18,268.43-7,269.71

Finding the Fourth Proportional to 13,238.10, 18,268.43 and 7,269.71

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Solution

The fourth proportional to 13,238.10, 18,268.43 and 7,269.71 is: 10,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.10 : 18,268.43 = 7,269.71 : x
  2. Step 2: Convert to fraction form
    13,238.10/18,268.43 = 7,269.71/x
  3. Step 3: Cross multiply
    13,238.10x = 18,268.43 × 7,269.71
  4. Step 4: Simplify right side
    13,238.10x = 132,806,060.56
  5. Step 5: Solve for x
    x = 132,806,060.56/13,238.10
  6. Step 6: Final answer
    x = 10,032.11

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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.