Home / 21,643.10-32,435.94-11,112.69

Finding the Fourth Proportional to 21,643.10, 32,435.94 and 11,112.69

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Solution

The fourth proportional to 21,643.10, 32,435.94 and 11,112.69 is: 16,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.10 : 32,435.94 = 11,112.69 : x
  2. Step 2: Convert to fraction form
    21,643.10/32,435.94 = 11,112.69/x
  3. Step 3: Cross multiply
    21,643.10x = 32,435.94 × 11,112.69
  4. Step 4: Simplify right side
    21,643.10x = 360,450,709.39
  5. Step 5: Solve for x
    x = 360,450,709.39/21,643.10
  6. Step 6: Final answer
    x = 16,654.30

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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.