Home / 30,274.70-41,780.06-18,940.56

Finding the Fourth Proportional to 30,274.70, 41,780.06 and 18,940.56

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Solution

The fourth proportional to 30,274.70, 41,780.06 and 18,940.56 is: 26,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,274.70 : 41,780.06 = 18,940.56 : x
  2. Step 2: Convert to fraction form
    30,274.70/41,780.06 = 18,940.56/x
  3. Step 3: Cross multiply
    30,274.70x = 41,780.06 × 18,940.56
  4. Step 4: Simplify right side
    30,274.70x = 791,337,733.23
  5. Step 5: Solve for x
    x = 791,337,733.23/30,274.70
  6. Step 6: Final answer
    x = 26,138.58

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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.