Home / 20,761.41-28,650.75-11,810.65

Finding the Fourth Proportional to 20,761.41, 28,650.75 and 11,810.65

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Solution

The fourth proportional to 20,761.41, 28,650.75 and 11,810.65 is: 16,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.41 : 28,650.75 = 11,810.65 : x
  2. Step 2: Convert to fraction form
    20,761.41/28,650.75 = 11,810.65/x
  3. Step 3: Cross multiply
    20,761.41x = 28,650.75 × 11,810.65
  4. Step 4: Simplify right side
    20,761.41x = 338,383,980.49
  5. Step 5: Solve for x
    x = 338,383,980.49/20,761.41
  6. Step 6: Final answer
    x = 16,298.70

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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.