Home / 28,765.30-39,708.40-19,339.33

Finding the Fourth Proportional to 28,765.30, 39,708.40 and 19,339.33

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Solution

The fourth proportional to 28,765.30, 39,708.40 and 19,339.33 is: 26,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.30 : 39,708.40 = 19,339.33 : x
  2. Step 2: Convert to fraction form
    28,765.30/39,708.40 = 19,339.33/x
  3. Step 3: Cross multiply
    28,765.30x = 39,708.40 × 19,339.33
  4. Step 4: Simplify right side
    28,765.30x = 767,933,980.54
  5. Step 5: Solve for x
    x = 767,933,980.54/28,765.30
  6. Step 6: Final answer
    x = 26,696.54

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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.