Home / 28,868.13-39,815.96-19,930.59

Finding the Fourth Proportional to 28,868.13, 39,815.96 and 19,930.59

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Solution

The fourth proportional to 28,868.13, 39,815.96 and 19,930.59 is: 27,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868.13 : 39,815.96 = 19,930.59 : x
  2. Step 2: Convert to fraction form
    28,868.13/39,815.96 = 19,930.59/x
  3. Step 3: Cross multiply
    28,868.13x = 39,815.96 × 19,930.59
  4. Step 4: Simplify right side
    28,868.13x = 793,555,474.56
  5. Step 5: Solve for x
    x = 793,555,474.56/28,868.13
  6. Step 6: Final answer
    x = 27,488.98

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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.