Home / 20,968.13-28,936.01-11,536.49

Finding the Fourth Proportional to 20,968.13, 28,936.01 and 11,536.49

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Solution

The fourth proportional to 20,968.13, 28,936.01 and 11,536.49 is: 15,920.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.13 : 28,936.01 = 11,536.49 : x
  2. Step 2: Convert to fraction form
    20,968.13/28,936.01 = 11,536.49/x
  3. Step 3: Cross multiply
    20,968.13x = 28,936.01 × 11,536.49
  4. Step 4: Simplify right side
    20,968.13x = 333,819,990.00
  5. Step 5: Solve for x
    x = 333,819,990.00/20,968.13
  6. Step 6: Final answer
    x = 15,920.35

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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.