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Finding the Fourth Proportional to 21,203.36, 31,805.04 and 7,352.36

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Solution

The fourth proportional to 21,203.36, 31,805.04 and 7,352.36 is: 11,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.36 : 31,805.04 = 7,352.36 : x
  2. Step 2: Convert to fraction form
    21,203.36/31,805.04 = 7,352.36/x
  3. Step 3: Cross multiply
    21,203.36x = 31,805.04 × 7,352.36
  4. Step 4: Simplify right side
    21,203.36x = 233,842,103.89
  5. Step 5: Solve for x
    x = 233,842,103.89/21,203.36
  6. Step 6: Final answer
    x = 11,028.54

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1.5x scale

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.