Home / 20,361.73-28,089.67-13,559.18

Finding the Fourth Proportional to 20,361.73, 28,089.67 and 13,559.18

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Solution

The fourth proportional to 20,361.73, 28,089.67 and 13,559.18 is: 18,705.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.73 : 28,089.67 = 13,559.18 : x
  2. Step 2: Convert to fraction form
    20,361.73/28,089.67 = 13,559.18/x
  3. Step 3: Cross multiply
    20,361.73x = 28,089.67 × 13,559.18
  4. Step 4: Simplify right side
    20,361.73x = 380,872,891.67
  5. Step 5: Solve for x
    x = 380,872,891.67/20,361.73
  6. Step 6: Final answer
    x = 18,705.33

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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.