Home / 21,664.87-29,896.08-12,589.42

Finding the Fourth Proportional to 21,664.87, 29,896.08 and 12,589.42

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Solution

The fourth proportional to 21,664.87, 29,896.08 and 12,589.42 is: 17,372.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.87 : 29,896.08 = 12,589.42 : x
  2. Step 2: Convert to fraction form
    21,664.87/29,896.08 = 12,589.42/x
  3. Step 3: Cross multiply
    21,664.87x = 29,896.08 × 12,589.42
  4. Step 4: Simplify right side
    21,664.87x = 376,374,307.47
  5. Step 5: Solve for x
    x = 376,374,307.47/21,664.87
  6. Step 6: Final answer
    x = 17,372.56

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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.