Home / 21,094.98-29,110.20-12,142.80

Finding the Fourth Proportional to 21,094.98, 29,110.20 and 12,142.80

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Solution

The fourth proportional to 21,094.98, 29,110.20 and 12,142.80 is: 16,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.98 : 29,110.20 = 12,142.80 : x
  2. Step 2: Convert to fraction form
    21,094.98/29,110.20 = 12,142.80/x
  3. Step 3: Cross multiply
    21,094.98x = 29,110.20 × 12,142.80
  4. Step 4: Simplify right side
    21,094.98x = 353,479,336.56
  5. Step 5: Solve for x
    x = 353,479,336.56/21,094.98
  6. Step 6: Final answer
    x = 16,756.56

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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.