Home / 20,847.03-28,768.05-11,892.80

Finding the Fourth Proportional to 20,847.03, 28,768.05 and 11,892.80

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Solution

The fourth proportional to 20,847.03, 28,768.05 and 11,892.80 is: 16,411.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.03 : 28,768.05 = 11,892.80 : x
  2. Step 2: Convert to fraction form
    20,847.03/28,768.05 = 11,892.80/x
  3. Step 3: Cross multiply
    20,847.03x = 28,768.05 × 11,892.80
  4. Step 4: Simplify right side
    20,847.03x = 342,132,521.20
  5. Step 5: Solve for x
    x = 342,132,521.20/20,847.03
  6. Step 6: Final answer
    x = 16,411.57

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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.