Home / 28,724.42-39,639.60-16,149.17

Finding the Fourth Proportional to 28,724.42, 39,639.60 and 16,149.17

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Solution

The fourth proportional to 28,724.42, 39,639.60 and 16,149.17 is: 22,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.42 : 39,639.60 = 16,149.17 : x
  2. Step 2: Convert to fraction form
    28,724.42/39,639.60 = 16,149.17/x
  3. Step 3: Cross multiply
    28,724.42x = 39,639.60 × 16,149.17
  4. Step 4: Simplify right side
    28,724.42x = 640,146,783.65
  5. Step 5: Solve for x
    x = 640,146,783.65/28,724.42
  6. Step 6: Final answer
    x = 22,285.80

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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.