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Finding the Fourth Proportional to 19,005, 28,508.04 and 5,154

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Solution

The fourth proportional to 19,005, 28,508.04 and 5,154 is: 7,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005 : 28,508.04 = 5,154 : x
  2. Step 2: Convert to fraction form
    19,005/28,508.04 = 5,154/x
  3. Step 3: Cross multiply
    19,005x = 28,508.04 × 5,154
  4. Step 4: Simplify right side
    19,005x = 146,930,438.16
  5. Step 5: Solve for x
    x = 146,930,438.16/19,005
  6. Step 6: Final answer
    x = 7,731.15

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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.