Home / 18,787.46-28,185.51-5,640.08

Finding the Fourth Proportional to 18,787.46, 28,185.51 and 5,640.08

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Solution

The fourth proportional to 18,787.46, 28,185.51 and 5,640.08 is: 8,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.46 : 28,185.51 = 5,640.08 : x
  2. Step 2: Convert to fraction form
    18,787.46/28,185.51 = 5,640.08/x
  3. Step 3: Cross multiply
    18,787.46x = 28,185.51 × 5,640.08
  4. Step 4: Simplify right side
    18,787.46x = 158,968,531.24
  5. Step 5: Solve for x
    x = 158,968,531.24/18,787.46
  6. Step 6: Final answer
    x = 8,461.42

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1.5x scale

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.