Home / 13,103.22-18,081.87-7,134.54

Finding the Fourth Proportional to 13,103.22, 18,081.87 and 7,134.54

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Solution

The fourth proportional to 13,103.22, 18,081.87 and 7,134.54 is: 9,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.22 : 18,081.87 = 7,134.54 : x
  2. Step 2: Convert to fraction form
    13,103.22/18,081.87 = 7,134.54/x
  3. Step 3: Cross multiply
    13,103.22x = 18,081.87 × 7,134.54
  4. Step 4: Simplify right side
    13,103.22x = 129,005,824.79
  5. Step 5: Solve for x
    x = 129,005,824.79/13,103.22
  6. Step 6: Final answer
    x = 9,845.35

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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.