Home / 20,839.51-31,192.14-13,729.62

Finding the Fourth Proportional to 20,839.51, 31,192.14 and 13,729.62

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Solution

The fourth proportional to 20,839.51, 31,192.14 and 13,729.62 is: 20,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.51 : 31,192.14 = 13,729.62 : x
  2. Step 2: Convert to fraction form
    20,839.51/31,192.14 = 13,729.62/x
  3. Step 3: Cross multiply
    20,839.51x = 31,192.14 × 13,729.62
  4. Step 4: Simplify right side
    20,839.51x = 428,256,086.81
  5. Step 5: Solve for x
    x = 428,256,086.81/20,839.51
  6. Step 6: Final answer
    x = 20,550.20

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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.