Home / 21,003.02-28,984.20-11,571.62

Finding the Fourth Proportional to 21,003.02, 28,984.20 and 11,571.62

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Solution

The fourth proportional to 21,003.02, 28,984.20 and 11,571.62 is: 15,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.02 : 28,984.20 = 11,571.62 : x
  2. Step 2: Convert to fraction form
    21,003.02/28,984.20 = 11,571.62/x
  3. Step 3: Cross multiply
    21,003.02x = 28,984.20 × 11,571.62
  4. Step 4: Simplify right side
    21,003.02x = 335,394,148.40
  5. Step 5: Solve for x
    x = 335,394,148.40/21,003.02
  6. Step 6: Final answer
    x = 15,968.85

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1.5x scale

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.