Home / 21,454.70-29,605.87-12,021.44

Finding the Fourth Proportional to 21,454.70, 29,605.87 and 12,021.44

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Solution

The fourth proportional to 21,454.70, 29,605.87 and 12,021.44 is: 16,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.70 : 29,605.87 = 12,021.44 : x
  2. Step 2: Convert to fraction form
    21,454.70/29,605.87 = 12,021.44/x
  3. Step 3: Cross multiply
    21,454.70x = 29,605.87 × 12,021.44
  4. Step 4: Simplify right side
    21,454.70x = 355,905,189.85
  5. Step 5: Solve for x
    x = 355,905,189.85/21,454.70
  6. Step 6: Final answer
    x = 16,588.68

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1.5x scale

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.