Home / 21,921.08-32,889.88-13,162.08

Finding the Fourth Proportional to 21,921.08, 32,889.88 and 13,162.08

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Solution

The fourth proportional to 21,921.08, 32,889.88 and 13,162.08 is: 19,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.08 : 32,889.88 = 13,162.08 : x
  2. Step 2: Convert to fraction form
    21,921.08/32,889.88 = 13,162.08/x
  3. Step 3: Cross multiply
    21,921.08x = 32,889.88 × 13,162.08
  4. Step 4: Simplify right side
    21,921.08x = 432,899,231.75
  5. Step 5: Solve for x
    x = 432,899,231.75/21,921.08
  6. Step 6: Final answer
    x = 19,748.08

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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.