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Finding the Fourth Proportional to 17,309.65, 23,887.31 and 9,351.86

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Solution

The fourth proportional to 17,309.65, 23,887.31 and 9,351.86 is: 12,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,309.65 : 23,887.31 = 9,351.86 : x
  2. Step 2: Convert to fraction form
    17,309.65/23,887.31 = 9,351.86/x
  3. Step 3: Cross multiply
    17,309.65x = 23,887.31 × 9,351.86
  4. Step 4: Simplify right side
    17,309.65x = 223,390,612.70
  5. Step 5: Solve for x
    x = 223,390,612.70/17,309.65
  6. Step 6: Final answer
    x = 12,905.55

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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.