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Finding the Fourth Proportional to 16,840.80, 23,239.80 and 9,388.80

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Solution

The fourth proportional to 16,840.80, 23,239.80 and 9,388.80 is: 12,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.80 : 23,239.80 = 9,388.80 : x
  2. Step 2: Convert to fraction form
    16,840.80/23,239.80 = 9,388.80/x
  3. Step 3: Cross multiply
    16,840.80x = 23,239.80 × 9,388.80
  4. Step 4: Simplify right side
    16,840.80x = 218,193,834.24
  5. Step 5: Solve for x
    x = 218,193,834.24/16,840.80
  6. Step 6: Final answer
    x = 12,956.26

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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.