Home / 20,676.74-28,521.72-13,007.79

Finding the Fourth Proportional to 20,676.74, 28,521.72 and 13,007.79

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Solution

The fourth proportional to 20,676.74, 28,521.72 and 13,007.79 is: 17,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.74 : 28,521.72 = 13,007.79 : x
  2. Step 2: Convert to fraction form
    20,676.74/28,521.72 = 13,007.79/x
  3. Step 3: Cross multiply
    20,676.74x = 28,521.72 × 13,007.79
  4. Step 4: Simplify right side
    20,676.74x = 371,004,544.20
  5. Step 5: Solve for x
    x = 371,004,544.20/20,676.74
  6. Step 6: Final answer
    x = 17,943.09

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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.