Home / 30,396.86-41,949.78-16,970.75

Finding the Fourth Proportional to 30,396.86, 41,949.78 and 16,970.75

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Solution

The fourth proportional to 30,396.86, 41,949.78 and 16,970.75 is: 23,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,396.86 : 41,949.78 = 16,970.75 : x
  2. Step 2: Convert to fraction form
    30,396.86/41,949.78 = 16,970.75/x
  3. Step 3: Cross multiply
    30,396.86x = 41,949.78 × 16,970.75
  4. Step 4: Simplify right side
    30,396.86x = 711,919,228.94
  5. Step 5: Solve for x
    x = 711,919,228.94/30,396.86
  6. Step 6: Final answer
    x = 23,420.81

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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.