Home / 20,698.98-28,563.80-11,745.95

Finding the Fourth Proportional to 20,698.98, 28,563.80 and 11,745.95

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Solution

The fourth proportional to 20,698.98, 28,563.80 and 11,745.95 is: 16,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.98 : 28,563.80 = 11,745.95 : x
  2. Step 2: Convert to fraction form
    20,698.98/28,563.80 = 11,745.95/x
  3. Step 3: Cross multiply
    20,698.98x = 28,563.80 × 11,745.95
  4. Step 4: Simplify right side
    20,698.98x = 335,508,966.61
  5. Step 5: Solve for x
    x = 335,508,966.61/20,698.98
  6. Step 6: Final answer
    x = 16,208.96

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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.