Home / 21,230.36-31,845.50-5,647.99

Finding the Fourth Proportional to 21,230.36, 31,845.50 and 5,647.99

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Solution

The fourth proportional to 21,230.36, 31,845.50 and 5,647.99 is: 8,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.36 : 31,845.50 = 5,647.99 : x
  2. Step 2: Convert to fraction form
    21,230.36/31,845.50 = 5,647.99/x
  3. Step 3: Cross multiply
    21,230.36x = 31,845.50 × 5,647.99
  4. Step 4: Simplify right side
    21,230.36x = 179,863,065.55
  5. Step 5: Solve for x
    x = 179,863,065.55/21,230.36
  6. Step 6: Final answer
    x = 8,471.97

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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.