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Finding the Fourth Proportional to 30,992.70, 46,488.63 and 7,619.34

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Solution

The fourth proportional to 30,992.70, 46,488.63 and 7,619.34 is: 11,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,992.70 : 46,488.63 = 7,619.34 : x
  2. Step 2: Convert to fraction form
    30,992.70/46,488.63 = 7,619.34/x
  3. Step 3: Cross multiply
    30,992.70x = 46,488.63 × 7,619.34
  4. Step 4: Simplify right side
    30,992.70x = 354,212,678.10
  5. Step 5: Solve for x
    x = 354,212,678.10/30,992.70
  6. Step 6: Final answer
    x = 11,428.91

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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.