Home / 13,323.80-19,961.40-8,123.60

Finding the Fourth Proportional to 13,323.80, 19,961.40 and 8,123.60

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Solution

The fourth proportional to 13,323.80, 19,961.40 and 8,123.60 is: 12,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.80 : 19,961.40 = 8,123.60 : x
  2. Step 2: Convert to fraction form
    13,323.80/19,961.40 = 8,123.60/x
  3. Step 3: Cross multiply
    13,323.80x = 19,961.40 × 8,123.60
  4. Step 4: Simplify right side
    13,323.80x = 162,158,429.04
  5. Step 5: Solve for x
    x = 162,158,429.04/13,323.80
  6. Step 6: Final answer
    x = 12,170.58

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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.