Home / 21,313.28-31,974.84-6,524.36

Finding the Fourth Proportional to 21,313.28, 31,974.84 and 6,524.36

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Solution

The fourth proportional to 21,313.28, 31,974.84 and 6,524.36 is: 9,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.28 : 31,974.84 = 6,524.36 : x
  2. Step 2: Convert to fraction form
    21,313.28/31,974.84 = 6,524.36/x
  3. Step 3: Cross multiply
    21,313.28x = 31,974.84 × 6,524.36
  4. Step 4: Simplify right side
    21,313.28x = 208,615,367.10
  5. Step 5: Solve for x
    x = 208,615,367.10/21,313.28
  6. Step 6: Final answer
    x = 9,788.05

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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.