Home / 21,930.04-30,263.63-12,107.60

Finding the Fourth Proportional to 21,930.04, 30,263.63 and 12,107.60

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Solution

The fourth proportional to 21,930.04, 30,263.63 and 12,107.60 is: 16,708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.04 : 30,263.63 = 12,107.60 : x
  2. Step 2: Convert to fraction form
    21,930.04/30,263.63 = 12,107.60/x
  3. Step 3: Cross multiply
    21,930.04x = 30,263.63 × 12,107.60
  4. Step 4: Simplify right side
    21,930.04x = 366,419,944.56
  5. Step 5: Solve for x
    x = 366,419,944.56/21,930.04
  6. Step 6: Final answer
    x = 16,708.59

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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.