Home / 20,255.20-30,340.77-17,124.28

Finding the Fourth Proportional to 20,255.20, 30,340.77 and 17,124.28

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Solution

The fourth proportional to 20,255.20, 30,340.77 and 17,124.28 is: 25,650.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.20 : 30,340.77 = 17,124.28 : x
  2. Step 2: Convert to fraction form
    20,255.20/30,340.77 = 17,124.28/x
  3. Step 3: Cross multiply
    20,255.20x = 30,340.77 × 17,124.28
  4. Step 4: Simplify right side
    20,255.20x = 519,563,840.90
  5. Step 5: Solve for x
    x = 519,563,840.90/20,255.20
  6. Step 6: Final answer
    x = 25,650.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.