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Finding the Fourth Proportional to 18,735.91, 28,103.86 and 5,597.50

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Solution

The fourth proportional to 18,735.91, 28,103.86 and 5,597.50 is: 8,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.91 : 28,103.86 = 5,597.50 : x
  2. Step 2: Convert to fraction form
    18,735.91/28,103.86 = 5,597.50/x
  3. Step 3: Cross multiply
    18,735.91x = 28,103.86 × 5,597.50
  4. Step 4: Simplify right side
    18,735.91x = 157,311,356.35
  5. Step 5: Solve for x
    x = 157,311,356.35/18,735.91
  6. Step 6: Final answer
    x = 8,396.25

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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.