Home / 30,219.70-41,709.15-19,310.86

Finding the Fourth Proportional to 30,219.70, 41,709.15 and 19,310.86

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Solution

The fourth proportional to 30,219.70, 41,709.15 and 19,310.86 is: 26,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.70 : 41,709.15 = 19,310.86 : x
  2. Step 2: Convert to fraction form
    30,219.70/41,709.15 = 19,310.86/x
  3. Step 3: Cross multiply
    30,219.70x = 41,709.15 × 19,310.86
  4. Step 4: Simplify right side
    30,219.70x = 805,439,556.37
  5. Step 5: Solve for x
    x = 805,439,556.37/30,219.70
  6. Step 6: Final answer
    x = 26,652.80

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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.