Home / 26,212.80-39,319.20-13,771.20

Finding the Fourth Proportional to 26,212.80, 39,319.20 and 13,771.20

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Solution

The fourth proportional to 26,212.80, 39,319.20 and 13,771.20 is: 20,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,212.80 : 39,319.20 = 13,771.20 : x
  2. Step 2: Convert to fraction form
    26,212.80/39,319.20 = 13,771.20/x
  3. Step 3: Cross multiply
    26,212.80x = 39,319.20 × 13,771.20
  4. Step 4: Simplify right side
    26,212.80x = 541,472,567.04
  5. Step 5: Solve for x
    x = 541,472,567.04/26,212.80
  6. Step 6: Final answer
    x = 20,656.80

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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.