Home / 21,279.49-29,363.58-12,329.96

Finding the Fourth Proportional to 21,279.49, 29,363.58 and 12,329.96

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Solution

The fourth proportional to 21,279.49, 29,363.58 and 12,329.96 is: 17,014.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.49 : 29,363.58 = 12,329.96 : x
  2. Step 2: Convert to fraction form
    21,279.49/29,363.58 = 12,329.96/x
  3. Step 3: Cross multiply
    21,279.49x = 29,363.58 × 12,329.96
  4. Step 4: Simplify right side
    21,279.49x = 362,051,620.04
  5. Step 5: Solve for x
    x = 362,051,620.04/21,279.49
  6. Step 6: Final answer
    x = 17,014.11

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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.