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Finding the Fourth Proportional to 21,902.94, 30,215.52 and 14,346

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Solution

The fourth proportional to 21,902.94, 30,215.52 and 14,346 is: 19,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.94 : 30,215.52 = 14,346 : x
  2. Step 2: Convert to fraction form
    21,902.94/30,215.52 = 14,346/x
  3. Step 3: Cross multiply
    21,902.94x = 30,215.52 × 14,346
  4. Step 4: Simplify right side
    21,902.94x = 433,471,849.92
  5. Step 5: Solve for x
    x = 433,471,849.92/21,902.94
  6. Step 6: Final answer
    x = 19,790.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.