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Finding the Fourth Proportional to 15,028.42, 20,737.88 and 8,653.32

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Solution

The fourth proportional to 15,028.42, 20,737.88 and 8,653.32 is: 11,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.42 : 20,737.88 = 8,653.32 : x
  2. Step 2: Convert to fraction form
    15,028.42/20,737.88 = 8,653.32/x
  3. Step 3: Cross multiply
    15,028.42x = 20,737.88 × 8,653.32
  4. Step 4: Simplify right side
    15,028.42x = 179,451,511.76
  5. Step 5: Solve for x
    x = 179,451,511.76/15,028.42
  6. Step 6: Final answer
    x = 11,940.81

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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.