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Finding the Fourth Proportional to 17,613.18, 26,412.09 and 6,661.50

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Solution

The fourth proportional to 17,613.18, 26,412.09 and 6,661.50 is: 9,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,613.18 : 26,412.09 = 6,661.50 : x
  2. Step 2: Convert to fraction form
    17,613.18/26,412.09 = 6,661.50/x
  3. Step 3: Cross multiply
    17,613.18x = 26,412.09 × 6,661.50
  4. Step 4: Simplify right side
    17,613.18x = 175,944,137.54
  5. Step 5: Solve for x
    x = 175,944,137.54/17,613.18
  6. Step 6: Final answer
    x = 9,989.35

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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.