Home / 20,647.08-28,493.08-12,149.52

Finding the Fourth Proportional to 20,647.08, 28,493.08 and 12,149.52

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Solution

The fourth proportional to 20,647.08, 28,493.08 and 12,149.52 is: 16,766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.08 : 28,493.08 = 12,149.52 : x
  2. Step 2: Convert to fraction form
    20,647.08/28,493.08 = 12,149.52/x
  3. Step 3: Cross multiply
    20,647.08x = 28,493.08 × 12,149.52
  4. Step 4: Simplify right side
    20,647.08x = 346,177,245.32
  5. Step 5: Solve for x
    x = 346,177,245.32/20,647.08
  6. Step 6: Final answer
    x = 16,766.40

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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.