Home / 19,115.80-28,673.70-11,320.60

Finding the Fourth Proportional to 19,115.80, 28,673.70 and 11,320.60

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Solution

The fourth proportional to 19,115.80, 28,673.70 and 11,320.60 is: 16,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.80 : 28,673.70 = 11,320.60 : x
  2. Step 2: Convert to fraction form
    19,115.80/28,673.70 = 11,320.60/x
  3. Step 3: Cross multiply
    19,115.80x = 28,673.70 × 11,320.60
  4. Step 4: Simplify right side
    19,115.80x = 324,603,488.22
  5. Step 5: Solve for x
    x = 324,603,488.22/19,115.80
  6. Step 6: Final answer
    x = 16,980.90

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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.