Home / 21,771.14-30,044.16-12,339.69

Finding the Fourth Proportional to 21,771.14, 30,044.16 and 12,339.69

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Solution

The fourth proportional to 21,771.14, 30,044.16 and 12,339.69 is: 17,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.14 : 30,044.16 = 12,339.69 : x
  2. Step 2: Convert to fraction form
    21,771.14/30,044.16 = 12,339.69/x
  3. Step 3: Cross multiply
    21,771.14x = 30,044.16 × 12,339.69
  4. Step 4: Simplify right side
    21,771.14x = 370,735,620.71
  5. Step 5: Solve for x
    x = 370,735,620.71/21,771.14
  6. Step 6: Final answer
    x = 17,028.77

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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.