Home / 21,843.93-30,143.73-12,283.55

Finding the Fourth Proportional to 21,843.93, 30,143.73 and 12,283.55

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Solution

The fourth proportional to 21,843.93, 30,143.73 and 12,283.55 is: 16,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.93 : 30,143.73 = 12,283.55 : x
  2. Step 2: Convert to fraction form
    21,843.93/30,143.73 = 12,283.55/x
  3. Step 3: Cross multiply
    21,843.93x = 30,143.73 × 12,283.55
  4. Step 4: Simplify right side
    21,843.93x = 370,271,863.92
  5. Step 5: Solve for x
    x = 370,271,863.92/21,843.93
  6. Step 6: Final answer
    x = 16,950.79

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Half scale
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Double scale
Find fourth proportional to 21,844.93, 30,145.11 and 12,284.55
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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.