Home / 20,469.84-28,248.32-11,517.35

Finding the Fourth Proportional to 20,469.84, 28,248.32 and 11,517.35

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Solution

The fourth proportional to 20,469.84, 28,248.32 and 11,517.35 is: 15,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.84 : 28,248.32 = 11,517.35 : x
  2. Step 2: Convert to fraction form
    20,469.84/28,248.32 = 11,517.35/x
  3. Step 3: Cross multiply
    20,469.84x = 28,248.32 × 11,517.35
  4. Step 4: Simplify right side
    20,469.84x = 325,345,788.35
  5. Step 5: Solve for x
    x = 325,345,788.35/20,469.84
  6. Step 6: Final answer
    x = 15,893.91

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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.