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Finding the Fourth Proportional to 19,104.53, 28,658.74 and 6,621.69

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Solution

The fourth proportional to 19,104.53, 28,658.74 and 6,621.69 is: 9,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,104.53 : 28,658.74 = 6,621.69 : x
  2. Step 2: Convert to fraction form
    19,104.53/28,658.74 = 6,621.69/x
  3. Step 3: Cross multiply
    19,104.53x = 28,658.74 × 6,621.69
  4. Step 4: Simplify right side
    19,104.53x = 189,769,292.07
  5. Step 5: Solve for x
    x = 189,769,292.07/19,104.53
  6. Step 6: Final answer
    x = 9,933.21

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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.