Home / 21,294.06-31,939.60-7,964.52

Finding the Fourth Proportional to 21,294.06, 31,939.60 and 7,964.52

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Solution

The fourth proportional to 21,294.06, 31,939.60 and 7,964.52 is: 11,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.06 : 31,939.60 = 7,964.52 : x
  2. Step 2: Convert to fraction form
    21,294.06/31,939.60 = 7,964.52/x
  3. Step 3: Cross multiply
    21,294.06x = 31,939.60 × 7,964.52
  4. Step 4: Simplify right side
    21,294.06x = 254,383,582.99
  5. Step 5: Solve for x
    x = 254,383,582.99/21,294.06
  6. Step 6: Final answer
    x = 11,946.22

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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.