Home / 20,285.80-28,013.57-19,181.37

Finding the Fourth Proportional to 20,285.80, 28,013.57 and 19,181.37

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Solution

The fourth proportional to 20,285.80, 28,013.57 and 19,181.37 is: 26,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.80 : 28,013.57 = 19,181.37 : x
  2. Step 2: Convert to fraction form
    20,285.80/28,013.57 = 19,181.37/x
  3. Step 3: Cross multiply
    20,285.80x = 28,013.57 × 19,181.37
  4. Step 4: Simplify right side
    20,285.80x = 537,338,651.19
  5. Step 5: Solve for x
    x = 537,338,651.19/20,285.80
  6. Step 6: Final answer
    x = 26,488.41

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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.