Home / 20,885.18-28,823.58-11,933.39

Finding the Fourth Proportional to 20,885.18, 28,823.58 and 11,933.39

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Solution

The fourth proportional to 20,885.18, 28,823.58 and 11,933.39 is: 16,469.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.18 : 28,823.58 = 11,933.39 : x
  2. Step 2: Convert to fraction form
    20,885.18/28,823.58 = 11,933.39/x
  3. Step 3: Cross multiply
    20,885.18x = 28,823.58 × 11,933.39
  4. Step 4: Simplify right side
    20,885.18x = 343,963,093.40
  5. Step 5: Solve for x
    x = 343,963,093.40/20,885.18
  6. Step 6: Final answer
    x = 16,469.25

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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.