Home / 13,516.27-18,643.06-12,400.90

Finding the Fourth Proportional to 13,516.27, 18,643.06 and 12,400.90

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Solution

The fourth proportional to 13,516.27, 18,643.06 and 12,400.90 is: 17,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.27 : 18,643.06 = 12,400.90 : x
  2. Step 2: Convert to fraction form
    13,516.27/18,643.06 = 12,400.90/x
  3. Step 3: Cross multiply
    13,516.27x = 18,643.06 × 12,400.90
  4. Step 4: Simplify right side
    13,516.27x = 231,190,691.65
  5. Step 5: Solve for x
    x = 231,190,691.65/13,516.27
  6. Step 6: Final answer
    x = 17,104.63

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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.