Home / 18,934.12-28,398.72-5,787.80

Finding the Fourth Proportional to 18,934.12, 28,398.72 and 5,787.80

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Solution

The fourth proportional to 18,934.12, 28,398.72 and 5,787.80 is: 8,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.12 : 28,398.72 = 5,787.80 : x
  2. Step 2: Convert to fraction form
    18,934.12/28,398.72 = 5,787.80/x
  3. Step 3: Cross multiply
    18,934.12x = 28,398.72 × 5,787.80
  4. Step 4: Simplify right side
    18,934.12x = 164,366,111.62
  5. Step 5: Solve for x
    x = 164,366,111.62/18,934.12
  6. Step 6: Final answer
    x = 8,680.95

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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.