Home / 28,724.56-39,639.42-16,149.28

Finding the Fourth Proportional to 28,724.56, 39,639.42 and 16,149.28

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Solution

The fourth proportional to 28,724.56, 39,639.42 and 16,149.28 is: 22,285.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.56 : 39,639.42 = 16,149.28 : x
  2. Step 2: Convert to fraction form
    28,724.56/39,639.42 = 16,149.28/x
  3. Step 3: Cross multiply
    28,724.56x = 39,639.42 × 16,149.28
  4. Step 4: Simplify right side
    28,724.56x = 640,148,092.62
  5. Step 5: Solve for x
    x = 640,148,092.62/28,724.56
  6. Step 6: Final answer
    x = 22,285.74

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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.