Home / 21,968.76-30,309.32-17,928.48

Finding the Fourth Proportional to 21,968.76, 30,309.32 and 17,928.48

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Solution

The fourth proportional to 21,968.76, 30,309.32 and 17,928.48 is: 24,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.76 : 30,309.32 = 17,928.48 : x
  2. Step 2: Convert to fraction form
    21,968.76/30,309.32 = 17,928.48/x
  3. Step 3: Cross multiply
    21,968.76x = 30,309.32 × 17,928.48
  4. Step 4: Simplify right side
    21,968.76x = 543,400,037.43
  5. Step 5: Solve for x
    x = 543,400,037.43/21,968.76
  6. Step 6: Final answer
    x = 24,735.13

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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.