Home / 21,002.47-28,983.48-11,571.01

Finding the Fourth Proportional to 21,002.47, 28,983.48 and 11,571.01

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Solution

The fourth proportional to 21,002.47, 28,983.48 and 11,571.01 is: 15,968.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.47 : 28,983.48 = 11,571.01 : x
  2. Step 2: Convert to fraction form
    21,002.47/28,983.48 = 11,571.01/x
  3. Step 3: Cross multiply
    21,002.47x = 28,983.48 × 11,571.01
  4. Step 4: Simplify right side
    21,002.47x = 335,368,136.91
  5. Step 5: Solve for x
    x = 335,368,136.91/21,002.47
  6. Step 6: Final answer
    x = 15,968.03

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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.