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Finding the Fourth Proportional to 21,029.66, 31,539.11 and 6,235.12

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Solution

The fourth proportional to 21,029.66, 31,539.11 and 6,235.12 is: 9,351.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.66 : 31,539.11 = 6,235.12 : x
  2. Step 2: Convert to fraction form
    21,029.66/31,539.11 = 6,235.12/x
  3. Step 3: Cross multiply
    21,029.66x = 31,539.11 × 6,235.12
  4. Step 4: Simplify right side
    21,029.66x = 196,650,135.54
  5. Step 5: Solve for x
    x = 196,650,135.54/21,029.66
  6. Step 6: Final answer
    x = 9,351.08

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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.