Home / 20,647.85-28,493.55-12,033.49

Finding the Fourth Proportional to 20,647.85, 28,493.55 and 12,033.49

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Solution

The fourth proportional to 20,647.85, 28,493.55 and 12,033.49 is: 16,605.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.85 : 28,493.55 = 12,033.49 : x
  2. Step 2: Convert to fraction form
    20,647.85/28,493.55 = 12,033.49/x
  3. Step 3: Cross multiply
    20,647.85x = 28,493.55 × 12,033.49
  4. Step 4: Simplify right side
    20,647.85x = 342,876,717.20
  5. Step 5: Solve for x
    x = 342,876,717.20/20,647.85
  6. Step 6: Final answer
    x = 16,605.93

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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.