Home / 13,255.08-18,291.65-7,286.78

Finding the Fourth Proportional to 13,255.08, 18,291.65 and 7,286.78

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Solution

The fourth proportional to 13,255.08, 18,291.65 and 7,286.78 is: 10,055.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.08 : 18,291.65 = 7,286.78 : x
  2. Step 2: Convert to fraction form
    13,255.08/18,291.65 = 7,286.78/x
  3. Step 3: Cross multiply
    13,255.08x = 18,291.65 × 7,286.78
  4. Step 4: Simplify right side
    13,255.08x = 133,287,101.49
  5. Step 5: Solve for x
    x = 133,287,101.49/13,255.08
  6. Step 6: Final answer
    x = 10,055.55

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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.