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Finding the Fourth Proportional to 33,303, 45,938.70 and 20,731.80

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Solution

The fourth proportional to 33,303, 45,938.70 and 20,731.80 is: 28,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,303 : 45,938.70 = 20,731.80 : x
  2. Step 2: Convert to fraction form
    33,303/45,938.70 = 20,731.80/x
  3. Step 3: Cross multiply
    33,303x = 45,938.70 × 20,731.80
  4. Step 4: Simplify right side
    33,303x = 952,391,940.66
  5. Step 5: Solve for x
    x = 952,391,940.66/33,303
  6. Step 6: Final answer
    x = 28,597.78

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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.