Home / 20,886.88-28,828.92-14,183.68

Finding the Fourth Proportional to 20,886.88, 28,828.92 and 14,183.68

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Solution

The fourth proportional to 20,886.88, 28,828.92 and 14,183.68 is: 19,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.88 : 28,828.92 = 14,183.68 : x
  2. Step 2: Convert to fraction form
    20,886.88/28,828.92 = 14,183.68/x
  3. Step 3: Cross multiply
    20,886.88x = 28,828.92 × 14,183.68
  4. Step 4: Simplify right side
    20,886.88x = 408,900,176.03
  5. Step 5: Solve for x
    x = 408,900,176.03/20,886.88
  6. Step 6: Final answer
    x = 19,576.89

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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.