Home / 13,255.15-18,291.33-7,286.81

Finding the Fourth Proportional to 13,255.15, 18,291.33 and 7,286.81

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Solution

The fourth proportional to 13,255.15, 18,291.33 and 7,286.81 is: 10,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.15 : 18,291.33 = 7,286.81 : x
  2. Step 2: Convert to fraction form
    13,255.15/18,291.33 = 7,286.81/x
  3. Step 3: Cross multiply
    13,255.15x = 18,291.33 × 7,286.81
  4. Step 4: Simplify right side
    13,255.15x = 133,285,545.20
  5. Step 5: Solve for x
    x = 133,285,545.20/13,255.15
  6. Step 6: Final answer
    x = 10,055.38

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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.