Home / 12,423.12-18,634.80-3,664.08

Finding the Fourth Proportional to 12,423.12, 18,634.80 and 3,664.08

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Solution

The fourth proportional to 12,423.12, 18,634.80 and 3,664.08 is: 5,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.12 : 18,634.80 = 3,664.08 : x
  2. Step 2: Convert to fraction form
    12,423.12/18,634.80 = 3,664.08/x
  3. Step 3: Cross multiply
    12,423.12x = 18,634.80 × 3,664.08
  4. Step 4: Simplify right side
    12,423.12x = 68,279,397.98
  5. Step 5: Solve for x
    x = 68,279,397.98/12,423.12
  6. Step 6: Final answer
    x = 5,496.16

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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.