Home / 20,778.06-28,675.26-11,828.46

Finding the Fourth Proportional to 20,778.06, 28,675.26 and 11,828.46

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Solution

The fourth proportional to 20,778.06, 28,675.26 and 11,828.46 is: 16,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.06 : 28,675.26 = 11,828.46 : x
  2. Step 2: Convert to fraction form
    20,778.06/28,675.26 = 11,828.46/x
  3. Step 3: Cross multiply
    20,778.06x = 28,675.26 × 11,828.46
  4. Step 4: Simplify right side
    20,778.06x = 339,184,165.90
  5. Step 5: Solve for x
    x = 339,184,165.90/20,778.06
  6. Step 6: Final answer
    x = 16,324.15

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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.