Home / 12,558.72-18,847.80-6,720.24

Finding the Fourth Proportional to 12,558.72, 18,847.80 and 6,720.24

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Solution

The fourth proportional to 12,558.72, 18,847.80 and 6,720.24 is: 10,085.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.72 : 18,847.80 = 6,720.24 : x
  2. Step 2: Convert to fraction form
    12,558.72/18,847.80 = 6,720.24/x
  3. Step 3: Cross multiply
    12,558.72x = 18,847.80 × 6,720.24
  4. Step 4: Simplify right side
    12,558.72x = 126,661,739.47
  5. Step 5: Solve for x
    x = 126,661,739.47/12,558.72
  6. Step 6: Final answer
    x = 10,085.56

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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.