Home / 18,215.45-25,137.24-10,149.20

Finding the Fourth Proportional to 18,215.45, 25,137.24 and 10,149.20

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Solution

The fourth proportional to 18,215.45, 25,137.24 and 10,149.20 is: 14,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.45 : 25,137.24 = 10,149.20 : x
  2. Step 2: Convert to fraction form
    18,215.45/25,137.24 = 10,149.20/x
  3. Step 3: Cross multiply
    18,215.45x = 25,137.24 × 10,149.20
  4. Step 4: Simplify right side
    18,215.45x = 255,122,750.52
  5. Step 5: Solve for x
    x = 255,122,750.52/18,215.45
  6. Step 6: Final answer
    x = 14,005.85

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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.