Home / 21,232.75-31,845.54-6,438.10

Finding the Fourth Proportional to 21,232.75, 31,845.54 and 6,438.10

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Solution

The fourth proportional to 21,232.75, 31,845.54 and 6,438.10 is: 9,656.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.75 : 31,845.54 = 6,438.10 : x
  2. Step 2: Convert to fraction form
    21,232.75/31,845.54 = 6,438.10/x
  3. Step 3: Cross multiply
    21,232.75x = 31,845.54 × 6,438.10
  4. Step 4: Simplify right side
    21,232.75x = 205,024,771.07
  5. Step 5: Solve for x
    x = 205,024,771.07/21,232.75
  6. Step 6: Final answer
    x = 9,656.06

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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.