Home / 13,263.80-19,911.90-13,166.60

Finding the Fourth Proportional to 13,263.80, 19,911.90 and 13,166.60

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Solution

The fourth proportional to 13,263.80, 19,911.90 and 13,166.60 is: 19,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.80 : 19,911.90 = 13,166.60 : x
  2. Step 2: Convert to fraction form
    13,263.80/19,911.90 = 13,166.60/x
  3. Step 3: Cross multiply
    13,263.80x = 19,911.90 × 13,166.60
  4. Step 4: Simplify right side
    13,263.80x = 262,172,022.54
  5. Step 5: Solve for x
    x = 262,172,022.54/13,263.80
  6. Step 6: Final answer
    x = 19,765.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.