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Finding the Fourth Proportional to 16,679.77, 23,015.05 and 9,509.38

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Solution

The fourth proportional to 16,679.77, 23,015.05 and 9,509.38 is: 13,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,679.77 : 23,015.05 = 9,509.38 : x
  2. Step 2: Convert to fraction form
    16,679.77/23,015.05 = 9,509.38/x
  3. Step 3: Cross multiply
    16,679.77x = 23,015.05 × 9,509.38
  4. Step 4: Simplify right side
    16,679.77x = 218,858,774.86
  5. Step 5: Solve for x
    x = 218,858,774.86/16,679.77
  6. Step 6: Final answer
    x = 13,121.21

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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.