Home / 20,305.89-28,022.05-11,353.37

Finding the Fourth Proportional to 20,305.89, 28,022.05 and 11,353.37

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Solution

The fourth proportional to 20,305.89, 28,022.05 and 11,353.37 is: 15,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.89 : 28,022.05 = 11,353.37 : x
  2. Step 2: Convert to fraction form
    20,305.89/28,022.05 = 11,353.37/x
  3. Step 3: Cross multiply
    20,305.89x = 28,022.05 × 11,353.37
  4. Step 4: Simplify right side
    20,305.89x = 318,144,575.89
  5. Step 5: Solve for x
    x = 318,144,575.89/20,305.89
  6. Step 6: Final answer
    x = 15,667.60

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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.