Home / 21,857.93-30,163.61-12,297.09

Finding the Fourth Proportional to 21,857.93, 30,163.61 and 12,297.09

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Solution

The fourth proportional to 21,857.93, 30,163.61 and 12,297.09 is: 16,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.93 : 30,163.61 = 12,297.09 : x
  2. Step 2: Convert to fraction form
    21,857.93/30,163.61 = 12,297.09/x
  3. Step 3: Cross multiply
    21,857.93x = 30,163.61 × 12,297.09
  4. Step 4: Simplify right side
    21,857.93x = 370,924,565.41
  5. Step 5: Solve for x
    x = 370,924,565.41/21,857.93
  6. Step 6: Final answer
    x = 16,969.80

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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.