Home / 20,571.24-28,386.18-11,619.72

Finding the Fourth Proportional to 20,571.24, 28,386.18 and 11,619.72

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Solution

The fourth proportional to 20,571.24, 28,386.18 and 11,619.72 is: 16,034.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.24 : 28,386.18 = 11,619.72 : x
  2. Step 2: Convert to fraction form
    20,571.24/28,386.18 = 11,619.72/x
  3. Step 3: Cross multiply
    20,571.24x = 28,386.18 × 11,619.72
  4. Step 4: Simplify right side
    20,571.24x = 329,839,463.47
  5. Step 5: Solve for x
    x = 329,839,463.47/20,571.24
  6. Step 6: Final answer
    x = 16,034.01

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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.