Home / 20,483.22-28,260.72-12,517.28

Finding the Fourth Proportional to 20,483.22, 28,260.72 and 12,517.28

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Solution

The fourth proportional to 20,483.22, 28,260.72 and 12,517.28 is: 17,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.22 : 28,260.72 = 12,517.28 : x
  2. Step 2: Convert to fraction form
    20,483.22/28,260.72 = 12,517.28/x
  3. Step 3: Cross multiply
    20,483.22x = 28,260.72 × 12,517.28
  4. Step 4: Simplify right side
    20,483.22x = 353,747,203.94
  5. Step 5: Solve for x
    x = 353,747,203.94/20,483.22
  6. Step 6: Final answer
    x = 17,270.10

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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.