Home / 19,721.68-27,216.06-11,224.45

Finding the Fourth Proportional to 19,721.68, 27,216.06 and 11,224.45

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Solution

The fourth proportional to 19,721.68, 27,216.06 and 11,224.45 is: 15,489.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.68 : 27,216.06 = 11,224.45 : x
  2. Step 2: Convert to fraction form
    19,721.68/27,216.06 = 11,224.45/x
  3. Step 3: Cross multiply
    19,721.68x = 27,216.06 × 11,224.45
  4. Step 4: Simplify right side
    19,721.68x = 305,485,244.70
  5. Step 5: Solve for x
    x = 305,485,244.70/19,721.68
  6. Step 6: Final answer
    x = 15,489.82

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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.