Home / 13,259.52-18,296.37-8,221.91

Finding the Fourth Proportional to 13,259.52, 18,296.37 and 8,221.91

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Solution

The fourth proportional to 13,259.52, 18,296.37 and 8,221.91 is: 11,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.52 : 18,296.37 = 8,221.91 : x
  2. Step 2: Convert to fraction form
    13,259.52/18,296.37 = 8,221.91/x
  3. Step 3: Cross multiply
    13,259.52x = 18,296.37 × 8,221.91
  4. Step 4: Simplify right side
    13,259.52x = 150,431,107.47
  5. Step 5: Solve for x
    x = 150,431,107.47/13,259.52
  6. Step 6: Final answer
    x = 11,345.14

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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.