Home / 20,761.03-28,653.90-12,262.60

Finding the Fourth Proportional to 20,761.03, 28,653.90 and 12,262.60

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Solution

The fourth proportional to 20,761.03, 28,653.90 and 12,262.60 is: 16,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.03 : 28,653.90 = 12,262.60 : x
  2. Step 2: Convert to fraction form
    20,761.03/28,653.90 = 12,262.60/x
  3. Step 3: Cross multiply
    20,761.03x = 28,653.90 × 12,262.60
  4. Step 4: Simplify right side
    20,761.03x = 351,371,314.14
  5. Step 5: Solve for x
    x = 351,371,314.14/20,761.03
  6. Step 6: Final answer
    x = 16,924.56

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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.