Home / 12,761.79-19,149.16-5,740.38

Finding the Fourth Proportional to 12,761.79, 19,149.16 and 5,740.38

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Solution

The fourth proportional to 12,761.79, 19,149.16 and 5,740.38 is: 8,613.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.79 : 19,149.16 = 5,740.38 : x
  2. Step 2: Convert to fraction form
    12,761.79/19,149.16 = 5,740.38/x
  3. Step 3: Cross multiply
    12,761.79x = 19,149.16 × 5,740.38
  4. Step 4: Simplify right side
    12,761.79x = 109,923,455.08
  5. Step 5: Solve for x
    x = 109,923,455.08/12,761.79
  6. Step 6: Final answer
    x = 8,613.48

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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.