Home / 20,466.96-30,669.13-13,778.68

Finding the Fourth Proportional to 20,466.96, 30,669.13 and 13,778.68

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Solution

The fourth proportional to 20,466.96, 30,669.13 and 13,778.68 is: 20,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.96 : 30,669.13 = 13,778.68 : x
  2. Step 2: Convert to fraction form
    20,466.96/30,669.13 = 13,778.68/x
  3. Step 3: Cross multiply
    20,466.96x = 30,669.13 × 13,778.68
  4. Step 4: Simplify right side
    20,466.96x = 422,580,128.15
  5. Step 5: Solve for x
    x = 422,580,128.15/20,466.96
  6. Step 6: Final answer
    x = 20,646.94

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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.