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Finding the Fourth Proportional to 19,087, 28,631.04 and 5,236

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Solution

The fourth proportional to 19,087, 28,631.04 and 5,236 is: 7,854.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087 : 28,631.04 = 5,236 : x
  2. Step 2: Convert to fraction form
    19,087/28,631.04 = 5,236/x
  3. Step 3: Cross multiply
    19,087x = 28,631.04 × 5,236
  4. Step 4: Simplify right side
    19,087x = 149,912,125.44
  5. Step 5: Solve for x
    x = 149,912,125.44/19,087
  6. Step 6: Final answer
    x = 7,854.15

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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.