Home / 21,303.54-31,965.30-10,922.58

Finding the Fourth Proportional to 21,303.54, 31,965.30 and 10,922.58

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Solution

The fourth proportional to 21,303.54, 31,965.30 and 10,922.58 is: 16,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.54 : 31,965.30 = 10,922.58 : x
  2. Step 2: Convert to fraction form
    21,303.54/31,965.30 = 10,922.58/x
  3. Step 3: Cross multiply
    21,303.54x = 31,965.30 × 10,922.58
  4. Step 4: Simplify right side
    21,303.54x = 349,143,546.47
  5. Step 5: Solve for x
    x = 349,143,546.47/21,303.54
  6. Step 6: Final answer
    x = 16,388.99

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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.