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Finding the Fourth Proportional to 12,883, 19,317.40 and 3,995.87

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Solution

The fourth proportional to 12,883, 19,317.40 and 3,995.87 is: 5,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883 : 19,317.40 = 3,995.87 : x
  2. Step 2: Convert to fraction form
    12,883/19,317.40 = 3,995.87/x
  3. Step 3: Cross multiply
    12,883x = 19,317.40 × 3,995.87
  4. Step 4: Simplify right side
    12,883x = 77,189,819.14
  5. Step 5: Solve for x
    x = 77,189,819.14/12,883
  6. Step 6: Final answer
    x = 5,991.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.