Home / 20,504.12-28,307.97-13,442.85

Finding the Fourth Proportional to 20,504.12, 28,307.97 and 13,442.85

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Solution

The fourth proportional to 20,504.12, 28,307.97 and 13,442.85 is: 18,559.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.12 : 28,307.97 = 13,442.85 : x
  2. Step 2: Convert to fraction form
    20,504.12/28,307.97 = 13,442.85/x
  3. Step 3: Cross multiply
    20,504.12x = 28,307.97 × 13,442.85
  4. Step 4: Simplify right side
    20,504.12x = 380,539,794.51
  5. Step 5: Solve for x
    x = 380,539,794.51/20,504.12
  6. Step 6: Final answer
    x = 18,559.19

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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.