Home / 13,255.14-18,291.34-7,286.81

Finding the Fourth Proportional to 13,255.14, 18,291.34 and 7,286.81

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Solution

The fourth proportional to 13,255.14, 18,291.34 and 7,286.81 is: 10,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.14 : 18,291.34 = 7,286.81 : x
  2. Step 2: Convert to fraction form
    13,255.14/18,291.34 = 7,286.81/x
  3. Step 3: Cross multiply
    13,255.14x = 18,291.34 × 7,286.81
  4. Step 4: Simplify right side
    13,255.14x = 133,285,498.78
  5. Step 5: Solve for x
    x = 133,285,498.78/13,255.14
  6. Step 6: Final answer
    x = 10,055.38

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Half scale
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Double scale
Find fourth proportional to 13,256.14, 18,292.72 and 7,287.81
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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.