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Finding the Fourth Proportional to 22,859.64, 31,544.87 and 12,788.01

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Solution

The fourth proportional to 22,859.64, 31,544.87 and 12,788.01 is: 17,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,859.64 : 31,544.87 = 12,788.01 : x
  2. Step 2: Convert to fraction form
    22,859.64/31,544.87 = 12,788.01/x
  3. Step 3: Cross multiply
    22,859.64x = 31,544.87 × 12,788.01
  4. Step 4: Simplify right side
    22,859.64x = 403,396,049.07
  5. Step 5: Solve for x
    x = 403,396,049.07/22,859.64
  6. Step 6: Final answer
    x = 17,646.65

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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.