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Finding the Fourth Proportional to 22,321.04, 30,804 and 13,370

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Solution

The fourth proportional to 22,321.04, 30,804 and 13,370 is: 18,451.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,321.04 : 30,804 = 13,370 : x
  2. Step 2: Convert to fraction form
    22,321.04/30,804 = 13,370/x
  3. Step 3: Cross multiply
    22,321.04x = 30,804 × 13,370
  4. Step 4: Simplify right side
    22,321.04x = 411,849,480
  5. Step 5: Solve for x
    x = 411,849,480/22,321.04
  6. Step 6: Final answer
    x = 18,451.18

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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.