Home / 21,843.28-30,144.45-12,284.83

Finding the Fourth Proportional to 21,843.28, 30,144.45 and 12,284.83

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Solution

The fourth proportional to 21,843.28, 30,144.45 and 12,284.83 is: 16,953.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.28 : 30,144.45 = 12,284.83 : x
  2. Step 2: Convert to fraction form
    21,843.28/30,144.45 = 12,284.83/x
  3. Step 3: Cross multiply
    21,843.28x = 30,144.45 × 12,284.83
  4. Step 4: Simplify right side
    21,843.28x = 370,319,443.69
  5. Step 5: Solve for x
    x = 370,319,443.69/21,843.28
  6. Step 6: Final answer
    x = 16,953.47

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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.