Home / 13,129.24-18,104.58-8,647.26

Finding the Fourth Proportional to 13,129.24, 18,104.58 and 8,647.26

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Solution

The fourth proportional to 13,129.24, 18,104.58 and 8,647.26 is: 11,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.24 : 18,104.58 = 8,647.26 : x
  2. Step 2: Convert to fraction form
    13,129.24/18,104.58 = 8,647.26/x
  3. Step 3: Cross multiply
    13,129.24x = 18,104.58 × 8,647.26
  4. Step 4: Simplify right side
    13,129.24x = 156,555,010.45
  5. Step 5: Solve for x
    x = 156,555,010.45/13,129.24
  6. Step 6: Final answer
    x = 11,924.15

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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.