Home / 20,563.35-28,377.48-11,131.89

Finding the Fourth Proportional to 20,563.35, 28,377.48 and 11,131.89

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Solution

The fourth proportional to 20,563.35, 28,377.48 and 11,131.89 is: 15,362.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.35 : 28,377.48 = 11,131.89 : x
  2. Step 2: Convert to fraction form
    20,563.35/28,377.48 = 11,131.89/x
  3. Step 3: Cross multiply
    20,563.35x = 28,377.48 × 11,131.89
  4. Step 4: Simplify right side
    20,563.35x = 315,894,985.84
  5. Step 5: Solve for x
    x = 315,894,985.84/20,563.35
  6. Step 6: Final answer
    x = 15,362.04

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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.