Home / 28,429.14-39,232.39-15,854.70

Finding the Fourth Proportional to 28,429.14, 39,232.39 and 15,854.70

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Solution

The fourth proportional to 28,429.14, 39,232.39 and 15,854.70 is: 21,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.14 : 39,232.39 = 15,854.70 : x
  2. Step 2: Convert to fraction form
    28,429.14/39,232.39 = 15,854.70/x
  3. Step 3: Cross multiply
    28,429.14x = 39,232.39 × 15,854.70
  4. Step 4: Simplify right side
    28,429.14x = 622,017,773.73
  5. Step 5: Solve for x
    x = 622,017,773.73/28,429.14
  6. Step 6: Final answer
    x = 21,879.58

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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.