Home / 12,218.24-18,336.58-8,939.79

Finding the Fourth Proportional to 12,218.24, 18,336.58 and 8,939.79

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Solution

The fourth proportional to 12,218.24, 18,336.58 and 8,939.79 is: 13,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.24 : 18,336.58 = 8,939.79 : x
  2. Step 2: Convert to fraction form
    12,218.24/18,336.58 = 8,939.79/x
  3. Step 3: Cross multiply
    12,218.24x = 18,336.58 × 8,939.79
  4. Step 4: Simplify right side
    12,218.24x = 163,925,203.74
  5. Step 5: Solve for x
    x = 163,925,203.74/12,218.24
  6. Step 6: Final answer
    x = 13,416.43

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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.