Home / 20,542.88-28,348.96-11,111.44

Finding the Fourth Proportional to 20,542.88, 28,348.96 and 11,111.44

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Solution

The fourth proportional to 20,542.88, 28,348.96 and 11,111.44 is: 15,333.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.88 : 28,348.96 = 11,111.44 : x
  2. Step 2: Convert to fraction form
    20,542.88/28,348.96 = 11,111.44/x
  3. Step 3: Cross multiply
    20,542.88x = 28,348.96 × 11,111.44
  4. Step 4: Simplify right side
    20,542.88x = 314,997,768.10
  5. Step 5: Solve for x
    x = 314,997,768.10/20,542.88
  6. Step 6: Final answer
    x = 15,333.67

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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.