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Finding the Fourth Proportional to 12,382.94, 18,574.20 and 4,987.22

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Solution

The fourth proportional to 12,382.94, 18,574.20 and 4,987.22 is: 7,480.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.94 : 18,574.20 = 4,987.22 : x
  2. Step 2: Convert to fraction form
    12,382.94/18,574.20 = 4,987.22/x
  3. Step 3: Cross multiply
    12,382.94x = 18,574.20 × 4,987.22
  4. Step 4: Simplify right side
    12,382.94x = 92,633,528.85
  5. Step 5: Solve for x
    x = 92,633,528.85/12,382.94
  6. Step 6: Final answer
    x = 7,480.74

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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.