Home / 20,506.96-28,300.89-11,553.49

Finding the Fourth Proportional to 20,506.96, 28,300.89 and 11,553.49

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Solution

The fourth proportional to 20,506.96, 28,300.89 and 11,553.49 is: 15,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.96 : 28,300.89 = 11,553.49 : x
  2. Step 2: Convert to fraction form
    20,506.96/28,300.89 = 11,553.49/x
  3. Step 3: Cross multiply
    20,506.96x = 28,300.89 × 11,553.49
  4. Step 4: Simplify right side
    20,506.96x = 326,974,049.61
  5. Step 5: Solve for x
    x = 326,974,049.61/20,506.96
  6. Step 6: Final answer
    x = 15,944.54

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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.