Home / 28,724.74-39,640.72-16,788.58

Finding the Fourth Proportional to 28,724.74, 39,640.72 and 16,788.58

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Solution

The fourth proportional to 28,724.74, 39,640.72 and 16,788.58 is: 23,168.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.74 : 39,640.72 = 16,788.58 : x
  2. Step 2: Convert to fraction form
    28,724.74/39,640.72 = 16,788.58/x
  3. Step 3: Cross multiply
    28,724.74x = 39,640.72 × 16,788.58
  4. Step 4: Simplify right side
    28,724.74x = 665,511,398.98
  5. Step 5: Solve for x
    x = 665,511,398.98/28,724.74
  6. Step 6: Final answer
    x = 23,168.58

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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.