Home / 12,613.34-18,816.86-11,718.38

Finding the Fourth Proportional to 12,613.34, 18,816.86 and 11,718.38

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Solution

The fourth proportional to 12,613.34, 18,816.86 and 11,718.38 is: 17,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.34 : 18,816.86 = 11,718.38 : x
  2. Step 2: Convert to fraction form
    12,613.34/18,816.86 = 11,718.38/x
  3. Step 3: Cross multiply
    12,613.34x = 18,816.86 × 11,718.38
  4. Step 4: Simplify right side
    12,613.34x = 220,503,115.89
  5. Step 5: Solve for x
    x = 220,503,115.89/12,613.34
  6. Step 6: Final answer
    x = 17,481.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.