Home / 21,784.24-32,669.88-7,930

Finding the Fourth Proportional to 21,784.24, 32,669.88 and 7,930

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Solution

The fourth proportional to 21,784.24, 32,669.88 and 7,930 is: 11,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.24 : 32,669.88 = 7,930 : x
  2. Step 2: Convert to fraction form
    21,784.24/32,669.88 = 7,930/x
  3. Step 3: Cross multiply
    21,784.24x = 32,669.88 × 7,930
  4. Step 4: Simplify right side
    21,784.24x = 259,072,148.40
  5. Step 5: Solve for x
    x = 259,072,148.40/21,784.24
  6. Step 6: Final answer
    x = 11,892.64

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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.