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Finding the Fourth Proportional to 30,392.70, 41,940.83 and 19,068.30

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Solution

The fourth proportional to 30,392.70, 41,940.83 and 19,068.30 is: 26,313.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.70 : 41,940.83 = 19,068.30 : x
  2. Step 2: Convert to fraction form
    30,392.70/41,940.83 = 19,068.30/x
  3. Step 3: Cross multiply
    30,392.70x = 41,940.83 × 19,068.30
  4. Step 4: Simplify right side
    30,392.70x = 799,740,328.69
  5. Step 5: Solve for x
    x = 799,740,328.69/30,392.70
  6. Step 6: Final answer
    x = 26,313.57

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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.