Home / 20,905.80-28,859.82-14,018.69

Finding the Fourth Proportional to 20,905.80, 28,859.82 and 14,018.69

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Solution

The fourth proportional to 20,905.80, 28,859.82 and 14,018.69 is: 19,352.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.80 : 28,859.82 = 14,018.69 : x
  2. Step 2: Convert to fraction form
    20,905.80/28,859.82 = 14,018.69/x
  3. Step 3: Cross multiply
    20,905.80x = 28,859.82 × 14,018.69
  4. Step 4: Simplify right side
    20,905.80x = 404,576,766.71
  5. Step 5: Solve for x
    x = 404,576,766.71/20,905.80
  6. Step 6: Final answer
    x = 19,352.37

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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.