Home / 12,317.75-16,998.54-6,728.75

Finding the Fourth Proportional to 12,317.75, 16,998.54 and 6,728.75

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Solution

The fourth proportional to 12,317.75, 16,998.54 and 6,728.75 is: 9,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317.75 : 16,998.54 = 6,728.75 : x
  2. Step 2: Convert to fraction form
    12,317.75/16,998.54 = 6,728.75/x
  3. Step 3: Cross multiply
    12,317.75x = 16,998.54 × 6,728.75
  4. Step 4: Simplify right side
    12,317.75x = 114,378,926.03
  5. Step 5: Solve for x
    x = 114,378,926.03/12,317.75
  6. Step 6: Final answer
    x = 9,285.70

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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.