Home / 21,376.44-29,500.14-11,945.40

Finding the Fourth Proportional to 21,376.44, 29,500.14 and 11,945.40

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Solution

The fourth proportional to 21,376.44, 29,500.14 and 11,945.40 is: 16,485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.44 : 29,500.14 = 11,945.40 : x
  2. Step 2: Convert to fraction form
    21,376.44/29,500.14 = 11,945.40/x
  3. Step 3: Cross multiply
    21,376.44x = 29,500.14 × 11,945.40
  4. Step 4: Simplify right side
    21,376.44x = 352,390,972.36
  5. Step 5: Solve for x
    x = 352,390,972.36/21,376.44
  6. Step 6: Final answer
    x = 16,485.02

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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.