Home / 21,486.87-32,222.57-7,443.11

Finding the Fourth Proportional to 21,486.87, 32,222.57 and 7,443.11

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Solution

The fourth proportional to 21,486.87, 32,222.57 and 7,443.11 is: 11,161.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.87 : 32,222.57 = 7,443.11 : x
  2. Step 2: Convert to fraction form
    21,486.87/32,222.57 = 7,443.11/x
  3. Step 3: Cross multiply
    21,486.87x = 32,222.57 × 7,443.11
  4. Step 4: Simplify right side
    21,486.87x = 239,836,132.99
  5. Step 5: Solve for x
    x = 239,836,132.99/21,486.87
  6. Step 6: Final answer
    x = 11,161.99

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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.