Home / 12,239.36-18,359.68-11,617.28

Finding the Fourth Proportional to 12,239.36, 18,359.68 and 11,617.28

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Solution

The fourth proportional to 12,239.36, 18,359.68 and 11,617.28 is: 17,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.36 : 18,359.68 = 11,617.28 : x
  2. Step 2: Convert to fraction form
    12,239.36/18,359.68 = 11,617.28/x
  3. Step 3: Cross multiply
    12,239.36x = 18,359.68 × 11,617.28
  4. Step 4: Simplify right side
    12,239.36x = 213,289,543.27
  5. Step 5: Solve for x
    x = 213,289,543.27/12,239.36
  6. Step 6: Final answer
    x = 17,426.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.