Home / 21,271.73-31,904.84-7,231.19

Finding the Fourth Proportional to 21,271.73, 31,904.84 and 7,231.19

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Solution

The fourth proportional to 21,271.73, 31,904.84 and 7,231.19 is: 10,845.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.73 : 31,904.84 = 7,231.19 : x
  2. Step 2: Convert to fraction form
    21,271.73/31,904.84 = 7,231.19/x
  3. Step 3: Cross multiply
    21,271.73x = 31,904.84 × 7,231.19
  4. Step 4: Simplify right side
    21,271.73x = 230,709,764.28
  5. Step 5: Solve for x
    x = 230,709,764.28/21,271.73
  6. Step 6: Final answer
    x = 10,845.84

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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.