Home / 20,736.02-28,616-11,304.58

Finding the Fourth Proportional to 20,736.02, 28,616 and 11,304.58

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Solution

The fourth proportional to 20,736.02, 28,616 and 11,304.58 is: 15,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.02 : 28,616 = 11,304.58 : x
  2. Step 2: Convert to fraction form
    20,736.02/28,616 = 11,304.58/x
  3. Step 3: Cross multiply
    20,736.02x = 28,616 × 11,304.58
  4. Step 4: Simplify right side
    20,736.02x = 323,491,861.28
  5. Step 5: Solve for x
    x = 323,491,861.28/20,736.02
  6. Step 6: Final answer
    x = 15,600.48

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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.