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Finding the Fourth Proportional to 18,340.71, 25,310.04 and 10,382.87

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Solution

The fourth proportional to 18,340.71, 25,310.04 and 10,382.87 is: 14,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.71 : 25,310.04 = 10,382.87 : x
  2. Step 2: Convert to fraction form
    18,340.71/25,310.04 = 10,382.87/x
  3. Step 3: Cross multiply
    18,340.71x = 25,310.04 × 10,382.87
  4. Step 4: Simplify right side
    18,340.71x = 262,790,728.46
  5. Step 5: Solve for x
    x = 262,790,728.46/18,340.71
  6. Step 6: Final answer
    x = 14,328.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.