Home / 29,128.40-43,606.20-19,278.80

Finding the Fourth Proportional to 29,128.40, 43,606.20 and 19,278.80

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Solution

The fourth proportional to 29,128.40, 43,606.20 and 19,278.80 is: 28,861.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,128.40 : 43,606.20 = 19,278.80 : x
  2. Step 2: Convert to fraction form
    29,128.40/43,606.20 = 19,278.80/x
  3. Step 3: Cross multiply
    29,128.40x = 43,606.20 × 19,278.80
  4. Step 4: Simplify right side
    29,128.40x = 840,675,208.56
  5. Step 5: Solve for x
    x = 840,675,208.56/29,128.40
  6. Step 6: Final answer
    x = 28,861.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.