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Finding the Fourth Proportional to 12,558.53, 18,803.16 and 8,392.79

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Solution

The fourth proportional to 12,558.53, 18,803.16 and 8,392.79 is: 12,566.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.53 : 18,803.16 = 8,392.79 : x
  2. Step 2: Convert to fraction form
    12,558.53/18,803.16 = 8,392.79/x
  3. Step 3: Cross multiply
    12,558.53x = 18,803.16 × 8,392.79
  4. Step 4: Simplify right side
    12,558.53x = 157,810,879.20
  5. Step 5: Solve for x
    x = 157,810,879.20/12,558.53
  6. Step 6: Final answer
    x = 12,566.04

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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.