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Finding the Fourth Proportional to 18,761.50, 25,891.30 and 10,802.44

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Solution

The fourth proportional to 18,761.50, 25,891.30 and 10,802.44 is: 14,907.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.50 : 25,891.30 = 10,802.44 : x
  2. Step 2: Convert to fraction form
    18,761.50/25,891.30 = 10,802.44/x
  3. Step 3: Cross multiply
    18,761.50x = 25,891.30 × 10,802.44
  4. Step 4: Simplify right side
    18,761.50x = 279,689,214.77
  5. Step 5: Solve for x
    x = 279,689,214.77/18,761.50
  6. Step 6: Final answer
    x = 14,907.61

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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.