Home / 12,977.98-17,890.95-9,245.50

Finding the Fourth Proportional to 12,977.98, 17,890.95 and 9,245.50

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Solution

The fourth proportional to 12,977.98, 17,890.95 and 9,245.50 is: 12,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.98 : 17,890.95 = 9,245.50 : x
  2. Step 2: Convert to fraction form
    12,977.98/17,890.95 = 9,245.50/x
  3. Step 3: Cross multiply
    12,977.98x = 17,890.95 × 9,245.50
  4. Step 4: Simplify right side
    12,977.98x = 165,410,778.23
  5. Step 5: Solve for x
    x = 165,410,778.23/12,977.98
  6. Step 6: Final answer
    x = 12,745.49

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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.