Home / 20,321.18-28,027.72-17,493.20

Finding the Fourth Proportional to 20,321.18, 28,027.72 and 17,493.20

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Solution

The fourth proportional to 20,321.18, 28,027.72 and 17,493.20 is: 24,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.18 : 28,027.72 = 17,493.20 : x
  2. Step 2: Convert to fraction form
    20,321.18/28,027.72 = 17,493.20/x
  3. Step 3: Cross multiply
    20,321.18x = 28,027.72 × 17,493.20
  4. Step 4: Simplify right side
    20,321.18x = 490,294,511.50
  5. Step 5: Solve for x
    x = 490,294,511.50/20,321.18
  6. Step 6: Final answer
    x = 24,127.27

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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.