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Finding the Fourth Proportional to 30,328.96, 45,493.44 and 11,848

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Solution

The fourth proportional to 30,328.96, 45,493.44 and 11,848 is: 17,772

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328.96 : 45,493.44 = 11,848 : x
  2. Step 2: Convert to fraction form
    30,328.96/45,493.44 = 11,848/x
  3. Step 3: Cross multiply
    30,328.96x = 45,493.44 × 11,848
  4. Step 4: Simplify right side
    30,328.96x = 539,006,277.12
  5. Step 5: Solve for x
    x = 539,006,277.12/30,328.96
  6. Step 6: Final answer
    x = 17,772

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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.