Home / 21,768.22-30,042.66-12,338.47

Finding the Fourth Proportional to 21,768.22, 30,042.66 and 12,338.47

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Solution

The fourth proportional to 21,768.22, 30,042.66 and 12,338.47 is: 17,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.22 : 30,042.66 = 12,338.47 : x
  2. Step 2: Convert to fraction form
    21,768.22/30,042.66 = 12,338.47/x
  3. Step 3: Cross multiply
    21,768.22x = 30,042.66 × 12,338.47
  4. Step 4: Simplify right side
    21,768.22x = 370,680,459.13
  5. Step 5: Solve for x
    x = 370,680,459.13/21,768.22
  6. Step 6: Final answer
    x = 17,028.51

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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.