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Finding the Fourth Proportional to 19,205.18, 28,787.99 and 7,355.73

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Solution

The fourth proportional to 19,205.18, 28,787.99 and 7,355.73 is: 11,026.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.18 : 28,787.99 = 7,355.73 : x
  2. Step 2: Convert to fraction form
    19,205.18/28,787.99 = 7,355.73/x
  3. Step 3: Cross multiply
    19,205.18x = 28,787.99 × 7,355.73
  4. Step 4: Simplify right side
    19,205.18x = 211,756,500.96
  5. Step 5: Solve for x
    x = 211,756,500.96/19,205.18
  6. Step 6: Final answer
    x = 11,026.01

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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.