Home / 21,930.73-30,263.26-12,370.34

Finding the Fourth Proportional to 21,930.73, 30,263.26 and 12,370.34

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Solution

The fourth proportional to 21,930.73, 30,263.26 and 12,370.34 is: 17,070.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.73 : 30,263.26 = 12,370.34 : x
  2. Step 2: Convert to fraction form
    21,930.73/30,263.26 = 12,370.34/x
  3. Step 3: Cross multiply
    21,930.73x = 30,263.26 × 12,370.34
  4. Step 4: Simplify right side
    21,930.73x = 374,366,664.39
  5. Step 5: Solve for x
    x = 374,366,664.39/21,930.73
  6. Step 6: Final answer
    x = 17,070.42

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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.