Home / 21,873.36-30,185.81-12,313.60

Finding the Fourth Proportional to 21,873.36, 30,185.81 and 12,313.60

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Solution

The fourth proportional to 21,873.36, 30,185.81 and 12,313.60 is: 16,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873.36 : 30,185.81 = 12,313.60 : x
  2. Step 2: Convert to fraction form
    21,873.36/30,185.81 = 12,313.60/x
  3. Step 3: Cross multiply
    21,873.36x = 30,185.81 × 12,313.60
  4. Step 4: Simplify right side
    21,873.36x = 371,695,990.02
  5. Step 5: Solve for x
    x = 371,695,990.02/21,873.36
  6. Step 6: Final answer
    x = 16,993.09

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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.