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Finding the Fourth Proportional to 19,007.70, 28,511.55 and 8,477.70

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Solution

The fourth proportional to 19,007.70, 28,511.55 and 8,477.70 is: 12,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.70 : 28,511.55 = 8,477.70 : x
  2. Step 2: Convert to fraction form
    19,007.70/28,511.55 = 8,477.70/x
  3. Step 3: Cross multiply
    19,007.70x = 28,511.55 × 8,477.70
  4. Step 4: Simplify right side
    19,007.70x = 241,712,367.44
  5. Step 5: Solve for x
    x = 241,712,367.44/19,007.70
  6. Step 6: Final answer
    x = 12,716.55

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Similar ratio
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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.