Home / 12,272.24-18,315.64-11,439.92

Finding the Fourth Proportional to 12,272.24, 18,315.64 and 11,439.92

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Solution

The fourth proportional to 12,272.24, 18,315.64 and 11,439.92 is: 17,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.24 : 18,315.64 = 11,439.92 : x
  2. Step 2: Convert to fraction form
    12,272.24/18,315.64 = 11,439.92/x
  3. Step 3: Cross multiply
    12,272.24x = 18,315.64 × 11,439.92
  4. Step 4: Simplify right side
    12,272.24x = 209,529,456.35
  5. Step 5: Solve for x
    x = 209,529,456.35/12,272.24
  6. Step 6: Final answer
    x = 17,073.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.