Home / 28,197.39-38,910.71-15,621.23

Finding the Fourth Proportional to 28,197.39, 38,910.71 and 15,621.23

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Solution

The fourth proportional to 28,197.39, 38,910.71 and 15,621.23 is: 21,556.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.39 : 38,910.71 = 15,621.23 : x
  2. Step 2: Convert to fraction form
    28,197.39/38,910.71 = 15,621.23/x
  3. Step 3: Cross multiply
    28,197.39x = 38,910.71 × 15,621.23
  4. Step 4: Simplify right side
    28,197.39x = 607,833,150.37
  5. Step 5: Solve for x
    x = 607,833,150.37/28,197.39
  6. Step 6: Final answer
    x = 21,556.36

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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.