Home / 18,235.20-25,101.36-15,725.64

Finding the Fourth Proportional to 18,235.20, 25,101.36 and 15,725.64

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Solution

The fourth proportional to 18,235.20, 25,101.36 and 15,725.64 is: 21,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.20 : 25,101.36 = 15,725.64 : x
  2. Step 2: Convert to fraction form
    18,235.20/25,101.36 = 15,725.64/x
  3. Step 3: Cross multiply
    18,235.20x = 25,101.36 × 15,725.64
  4. Step 4: Simplify right side
    18,235.20x = 394,734,950.87
  5. Step 5: Solve for x
    x = 394,734,950.87/18,235.20
  6. Step 6: Final answer
    x = 21,646.87

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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.