Home / 21,234.60-29,299.48-12,278.84

Finding the Fourth Proportional to 21,234.60, 29,299.48 and 12,278.84

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Solution

The fourth proportional to 21,234.60, 29,299.48 and 12,278.84 is: 16,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.60 : 29,299.48 = 12,278.84 : x
  2. Step 2: Convert to fraction form
    21,234.60/29,299.48 = 12,278.84/x
  3. Step 3: Cross multiply
    21,234.60x = 29,299.48 × 12,278.84
  4. Step 4: Simplify right side
    21,234.60x = 359,763,627.00
  5. Step 5: Solve for x
    x = 359,763,627.00/21,234.60
  6. Step 6: Final answer
    x = 16,942.33

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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.