Home / 21,284.73-29,369.87-12,330.59

Finding the Fourth Proportional to 21,284.73, 29,369.87 and 12,330.59

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Solution

The fourth proportional to 21,284.73, 29,369.87 and 12,330.59 is: 17,014.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.73 : 29,369.87 = 12,330.59 : x
  2. Step 2: Convert to fraction form
    21,284.73/29,369.87 = 12,330.59/x
  3. Step 3: Cross multiply
    21,284.73x = 29,369.87 × 12,330.59
  4. Step 4: Simplify right side
    21,284.73x = 362,147,690.25
  5. Step 5: Solve for x
    x = 362,147,690.25/21,284.73
  6. Step 6: Final answer
    x = 17,014.43

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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.