Home / 20,748.72-28,625.04-12,777.12

Finding the Fourth Proportional to 20,748.72, 28,625.04 and 12,777.12

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Solution

The fourth proportional to 20,748.72, 28,625.04 and 12,777.12 is: 17,627.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.72 : 28,625.04 = 12,777.12 : x
  2. Step 2: Convert to fraction form
    20,748.72/28,625.04 = 12,777.12/x
  3. Step 3: Cross multiply
    20,748.72x = 28,625.04 × 12,777.12
  4. Step 4: Simplify right side
    20,748.72x = 365,745,571.08
  5. Step 5: Solve for x
    x = 365,745,571.08/20,748.72
  6. Step 6: Final answer
    x = 17,627.38

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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.