Home / 18,191.66-25,081.26-12,218.72

Finding the Fourth Proportional to 18,191.66, 25,081.26 and 12,218.72

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Solution

The fourth proportional to 18,191.66, 25,081.26 and 12,218.72 is: 16,846.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.66 : 25,081.26 = 12,218.72 : x
  2. Step 2: Convert to fraction form
    18,191.66/25,081.26 = 12,218.72/x
  3. Step 3: Cross multiply
    18,191.66x = 25,081.26 × 12,218.72
  4. Step 4: Simplify right side
    18,191.66x = 306,460,893.19
  5. Step 5: Solve for x
    x = 306,460,893.19/18,191.66
  6. Step 6: Final answer
    x = 16,846.23

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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.