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Finding the Fourth Proportional to 12,483.87, 17,230.68 and 7,181.75

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Solution

The fourth proportional to 12,483.87, 17,230.68 and 7,181.75 is: 9,912.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.87 : 17,230.68 = 7,181.75 : x
  2. Step 2: Convert to fraction form
    12,483.87/17,230.68 = 7,181.75/x
  3. Step 3: Cross multiply
    12,483.87x = 17,230.68 × 7,181.75
  4. Step 4: Simplify right side
    12,483.87x = 123,746,349.94
  5. Step 5: Solve for x
    x = 123,746,349.94/12,483.87
  6. Step 6: Final answer
    x = 9,912.50

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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.