Home / 20,622.74-28,441.82-13,899.53

Finding the Fourth Proportional to 20,622.74, 28,441.82 and 13,899.53

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Solution

The fourth proportional to 20,622.74, 28,441.82 and 13,899.53 is: 19,169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.74 : 28,441.82 = 13,899.53 : x
  2. Step 2: Convert to fraction form
    20,622.74/28,441.82 = 13,899.53/x
  3. Step 3: Cross multiply
    20,622.74x = 28,441.82 × 13,899.53
  4. Step 4: Simplify right side
    20,622.74x = 395,327,860.85
  5. Step 5: Solve for x
    x = 395,327,860.85/20,622.74
  6. Step 6: Final answer
    x = 19,169.51

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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.