Home / 12,612.04-18,920.89-3,847.84

Finding the Fourth Proportional to 12,612.04, 18,920.89 and 3,847.84

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Solution

The fourth proportional to 12,612.04, 18,920.89 and 3,847.84 is: 5,772.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.04 : 18,920.89 = 3,847.84 : x
  2. Step 2: Convert to fraction form
    12,612.04/18,920.89 = 3,847.84/x
  3. Step 3: Cross multiply
    12,612.04x = 18,920.89 × 3,847.84
  4. Step 4: Simplify right side
    12,612.04x = 72,804,557.38
  5. Step 5: Solve for x
    x = 72,804,557.38/12,612.04
  6. Step 6: Final answer
    x = 5,772.62

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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.