Home / 21,176.24-31,764.60-7,322

Finding the Fourth Proportional to 21,176.24, 31,764.60 and 7,322

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Solution

The fourth proportional to 21,176.24, 31,764.60 and 7,322 is: 10,983.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.24 : 31,764.60 = 7,322 : x
  2. Step 2: Convert to fraction form
    21,176.24/31,764.60 = 7,322/x
  3. Step 3: Cross multiply
    21,176.24x = 31,764.60 × 7,322
  4. Step 4: Simplify right side
    21,176.24x = 232,580,401.20
  5. Step 5: Solve for x
    x = 232,580,401.20/21,176.24
  6. Step 6: Final answer
    x = 10,983.08

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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.