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Finding the Fourth Proportional to 17,740.70, 26,613.78 and 5,259.42

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Solution

The fourth proportional to 17,740.70, 26,613.78 and 5,259.42 is: 7,889.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,740.70 : 26,613.78 = 5,259.42 : x
  2. Step 2: Convert to fraction form
    17,740.70/26,613.78 = 5,259.42/x
  3. Step 3: Cross multiply
    17,740.70x = 26,613.78 × 5,259.42
  4. Step 4: Simplify right side
    17,740.70x = 139,973,046.81
  5. Step 5: Solve for x
    x = 139,973,046.81/17,740.70
  6. Step 6: Final answer
    x = 7,889.94

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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.