Home / 21,845.44-30,150.28-12,895.12

Finding the Fourth Proportional to 21,845.44, 30,150.28 and 12,895.12

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Solution

The fourth proportional to 21,845.44, 30,150.28 and 12,895.12 is: 17,797.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.44 : 30,150.28 = 12,895.12 : x
  2. Step 2: Convert to fraction form
    21,845.44/30,150.28 = 12,895.12/x
  3. Step 3: Cross multiply
    21,845.44x = 30,150.28 × 12,895.12
  4. Step 4: Simplify right side
    21,845.44x = 388,791,478.63
  5. Step 5: Solve for x
    x = 388,791,478.63/21,845.44
  6. Step 6: Final answer
    x = 17,797.37

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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.