Home / 18,761.50-25,890.88-10,379.26

Finding the Fourth Proportional to 18,761.50, 25,890.88 and 10,379.26

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Solution

The fourth proportional to 18,761.50, 25,890.88 and 10,379.26 is: 14,323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.50 : 25,890.88 = 10,379.26 : x
  2. Step 2: Convert to fraction form
    18,761.50/25,890.88 = 10,379.26/x
  3. Step 3: Cross multiply
    18,761.50x = 25,890.88 × 10,379.26
  4. Step 4: Simplify right side
    18,761.50x = 268,728,175.15
  5. Step 5: Solve for x
    x = 268,728,175.15/18,761.50
  6. Step 6: Final answer
    x = 14,323.38

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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.