Home / 21,002.49-28,983.52-11,571.05

Finding the Fourth Proportional to 21,002.49, 28,983.52 and 11,571.05

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Solution

The fourth proportional to 21,002.49, 28,983.52 and 11,571.05 is: 15,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.49 : 28,983.52 = 11,571.05 : x
  2. Step 2: Convert to fraction form
    21,002.49/28,983.52 = 11,571.05/x
  3. Step 3: Cross multiply
    21,002.49x = 28,983.52 × 11,571.05
  4. Step 4: Simplify right side
    21,002.49x = 335,369,846.02
  5. Step 5: Solve for x
    x = 335,369,846.02/21,002.49
  6. Step 6: Final answer
    x = 15,968.10

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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.