Home / 18,300.31-27,429.28-8,418.85

Finding the Fourth Proportional to 18,300.31, 27,429.28 and 8,418.85

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Solution

The fourth proportional to 18,300.31, 27,429.28 and 8,418.85 is: 12,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.31 : 27,429.28 = 8,418.85 : x
  2. Step 2: Convert to fraction form
    18,300.31/27,429.28 = 8,418.85/x
  3. Step 3: Cross multiply
    18,300.31x = 27,429.28 × 8,418.85
  4. Step 4: Simplify right side
    18,300.31x = 230,922,814.69
  5. Step 5: Solve for x
    x = 230,922,814.69/18,300.31
  6. Step 6: Final answer
    x = 12,618.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.