Home / 21,187.22-31,778.12-5,606.06

Finding the Fourth Proportional to 21,187.22, 31,778.12 and 5,606.06

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Solution

The fourth proportional to 21,187.22, 31,778.12 and 5,606.06 is: 8,408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.22 : 31,778.12 = 5,606.06 : x
  2. Step 2: Convert to fraction form
    21,187.22/31,778.12 = 5,606.06/x
  3. Step 3: Cross multiply
    21,187.22x = 31,778.12 × 5,606.06
  4. Step 4: Simplify right side
    21,187.22x = 178,149,902.53
  5. Step 5: Solve for x
    x = 178,149,902.53/21,187.22
  6. Step 6: Final answer
    x = 8,408.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.