Home / 12,511.81-18,767.04-3,151.82

Finding the Fourth Proportional to 12,511.81, 18,767.04 and 3,151.82

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Solution

The fourth proportional to 12,511.81, 18,767.04 and 3,151.82 is: 4,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.81 : 18,767.04 = 3,151.82 : x
  2. Step 2: Convert to fraction form
    12,511.81/18,767.04 = 3,151.82/x
  3. Step 3: Cross multiply
    12,511.81x = 18,767.04 × 3,151.82
  4. Step 4: Simplify right side
    12,511.81x = 59,150,238.18
  5. Step 5: Solve for x
    x = 59,150,238.18/12,511.81
  6. Step 6: Final answer
    x = 4,727.55

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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.