Home / 28,568.66-42,828.35-13,787.96

Finding the Fourth Proportional to 28,568.66, 42,828.35 and 13,787.96

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Solution

The fourth proportional to 28,568.66, 42,828.35 and 13,787.96 is: 20,670.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.66 : 42,828.35 = 13,787.96 : x
  2. Step 2: Convert to fraction form
    28,568.66/42,828.35 = 13,787.96/x
  3. Step 3: Cross multiply
    28,568.66x = 42,828.35 × 13,787.96
  4. Step 4: Simplify right side
    28,568.66x = 590,515,293.58
  5. Step 5: Solve for x
    x = 590,515,293.58/28,568.66
  6. Step 6: Final answer
    x = 20,670.04

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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.