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Finding the Fourth Proportional to 18,896.88, 28,349.60 and 5,751.12

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Solution

The fourth proportional to 18,896.88, 28,349.60 and 5,751.12 is: 8,627.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.88 : 28,349.60 = 5,751.12 : x
  2. Step 2: Convert to fraction form
    18,896.88/28,349.60 = 5,751.12/x
  3. Step 3: Cross multiply
    18,896.88x = 28,349.60 × 5,751.12
  4. Step 4: Simplify right side
    18,896.88x = 163,041,951.55
  5. Step 5: Solve for x
    x = 163,041,951.55/18,896.88
  6. Step 6: Final answer
    x = 8,627.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.