Home / 21,345.20-32,015.88-7,493.36

Finding the Fourth Proportional to 21,345.20, 32,015.88 and 7,493.36

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Solution

The fourth proportional to 21,345.20, 32,015.88 and 7,493.36 is: 11,239.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.20 : 32,015.88 = 7,493.36 : x
  2. Step 2: Convert to fraction form
    21,345.20/32,015.88 = 7,493.36/x
  3. Step 3: Cross multiply
    21,345.20x = 32,015.88 × 7,493.36
  4. Step 4: Simplify right side
    21,345.20x = 239,906,514.56
  5. Step 5: Solve for x
    x = 239,906,514.56/21,345.20
  6. Step 6: Final answer
    x = 11,239.37

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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.