Home / 21,080.45-31,605.29-12,183.23

Finding the Fourth Proportional to 21,080.45, 31,605.29 and 12,183.23

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Solution

The fourth proportional to 21,080.45, 31,605.29 and 12,183.23 is: 18,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.45 : 31,605.29 = 12,183.23 : x
  2. Step 2: Convert to fraction form
    21,080.45/31,605.29 = 12,183.23/x
  3. Step 3: Cross multiply
    21,080.45x = 31,605.29 × 12,183.23
  4. Step 4: Simplify right side
    21,080.45x = 385,054,298.34
  5. Step 5: Solve for x
    x = 385,054,298.34/21,080.45
  6. Step 6: Final answer
    x = 18,265.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.