Home / 20,836.53-28,755.21-11,885.49

Finding the Fourth Proportional to 20,836.53, 28,755.21 and 11,885.49

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Solution

The fourth proportional to 20,836.53, 28,755.21 and 11,885.49 is: 16,402.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.53 : 28,755.21 = 11,885.49 : x
  2. Step 2: Convert to fraction form
    20,836.53/28,755.21 = 11,885.49/x
  3. Step 3: Cross multiply
    20,836.53x = 28,755.21 × 11,885.49
  4. Step 4: Simplify right side
    20,836.53x = 341,769,701.48
  5. Step 5: Solve for x
    x = 341,769,701.48/20,836.53
  6. Step 6: Final answer
    x = 16,402.43

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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.