Home / 21,756.24-30,028.44-12,330

Finding the Fourth Proportional to 21,756.24, 30,028.44 and 12,330

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Solution

The fourth proportional to 21,756.24, 30,028.44 and 12,330 is: 17,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.24 : 30,028.44 = 12,330 : x
  2. Step 2: Convert to fraction form
    21,756.24/30,028.44 = 12,330/x
  3. Step 3: Cross multiply
    21,756.24x = 30,028.44 × 12,330
  4. Step 4: Simplify right side
    21,756.24x = 370,250,665.20
  5. Step 5: Solve for x
    x = 370,250,665.20/21,756.24
  6. Step 6: Final answer
    x = 17,018.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.