Home / 21,914.22-30,243.74-12,964.60

Finding the Fourth Proportional to 21,914.22, 30,243.74 and 12,964.60

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Solution

The fourth proportional to 21,914.22, 30,243.74 and 12,964.60 is: 17,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.22 : 30,243.74 = 12,964.60 : x
  2. Step 2: Convert to fraction form
    21,914.22/30,243.74 = 12,964.60/x
  3. Step 3: Cross multiply
    21,914.22x = 30,243.74 × 12,964.60
  4. Step 4: Simplify right side
    21,914.22x = 392,097,991.60
  5. Step 5: Solve for x
    x = 392,097,991.60/21,914.22
  6. Step 6: Final answer
    x = 17,892.40

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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.