Home / 20,448.91-28,218.74-11,497.25

Finding the Fourth Proportional to 20,448.91, 28,218.74 and 11,497.25

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Solution

The fourth proportional to 20,448.91, 28,218.74 and 11,497.25 is: 15,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.91 : 28,218.74 = 11,497.25 : x
  2. Step 2: Convert to fraction form
    20,448.91/28,218.74 = 11,497.25/x
  3. Step 3: Cross multiply
    20,448.91x = 28,218.74 × 11,497.25
  4. Step 4: Simplify right side
    20,448.91x = 324,437,908.47
  5. Step 5: Solve for x
    x = 324,437,908.47/20,448.91
  6. Step 6: Final answer
    x = 15,865.78

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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.