Home / 13,664.34-18,843.57-12,186.90

Finding the Fourth Proportional to 13,664.34, 18,843.57 and 12,186.90

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Solution

The fourth proportional to 13,664.34, 18,843.57 and 12,186.90 is: 16,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.34 : 18,843.57 = 12,186.90 : x
  2. Step 2: Convert to fraction form
    13,664.34/18,843.57 = 12,186.90/x
  3. Step 3: Cross multiply
    13,664.34x = 18,843.57 × 12,186.90
  4. Step 4: Simplify right side
    13,664.34x = 229,644,703.23
  5. Step 5: Solve for x
    x = 229,644,703.23/13,664.34
  6. Step 6: Final answer
    x = 16,806.13

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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.