Home / 21,406.10-32,112.58-6,611.54

Finding the Fourth Proportional to 21,406.10, 32,112.58 and 6,611.54

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Solution

The fourth proportional to 21,406.10, 32,112.58 and 6,611.54 is: 9,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.10 : 32,112.58 = 6,611.54 : x
  2. Step 2: Convert to fraction form
    21,406.10/32,112.58 = 6,611.54/x
  3. Step 3: Cross multiply
    21,406.10x = 32,112.58 × 6,611.54
  4. Step 4: Simplify right side
    21,406.10x = 212,313,607.17
  5. Step 5: Solve for x
    x = 212,313,607.17/21,406.10
  6. Step 6: Final answer
    x = 9,918.37

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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.