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Finding the Fourth Proportional to 33,981.51, 50,971.81 and 20,806.20

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Solution

The fourth proportional to 33,981.51, 50,971.81 and 20,806.20 is: 31,209.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,981.51 : 50,971.81 = 20,806.20 : x
  2. Step 2: Convert to fraction form
    33,981.51/50,971.81 = 20,806.20/x
  3. Step 3: Cross multiply
    33,981.51x = 50,971.81 × 20,806.20
  4. Step 4: Simplify right side
    33,981.51x = 1,060,529,673.22
  5. Step 5: Solve for x
    x = 1,060,529,673.22/33,981.51
  6. Step 6: Final answer
    x = 31,209.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.