Home / 38,429.45-57,639.31-12,136.85

Finding the Fourth Proportional to 38,429.45, 57,639.31 and 12,136.85

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Solution

The fourth proportional to 38,429.45, 57,639.31 and 12,136.85 is: 18,203.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.45 : 57,639.31 = 12,136.85 : x
  2. Step 2: Convert to fraction form
    38,429.45/57,639.31 = 12,136.85/x
  3. Step 3: Cross multiply
    38,429.45x = 57,639.31 × 12,136.85
  4. Step 4: Simplify right side
    38,429.45x = 699,559,659.57
  5. Step 5: Solve for x
    x = 699,559,659.57/38,429.45
  6. Step 6: Final answer
    x = 18,203.74

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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.