Home / 12,642.12-18,963.62-4,743.83

Finding the Fourth Proportional to 12,642.12, 18,963.62 and 4,743.83

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Solution

The fourth proportional to 12,642.12, 18,963.62 and 4,743.83 is: 7,115.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.12 : 18,963.62 = 4,743.83 : x
  2. Step 2: Convert to fraction form
    12,642.12/18,963.62 = 4,743.83/x
  3. Step 3: Cross multiply
    12,642.12x = 18,963.62 × 4,743.83
  4. Step 4: Simplify right side
    12,642.12x = 89,960,189.46
  5. Step 5: Solve for x
    x = 89,960,189.46/12,642.12
  6. Step 6: Final answer
    x = 7,115.91

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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.