Home / 38,778.87-58,168.61-21,239.13

Finding the Fourth Proportional to 38,778.87, 58,168.61 and 21,239.13

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Solution

The fourth proportional to 38,778.87, 58,168.61 and 21,239.13 is: 31,858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,778.87 : 58,168.61 = 21,239.13 : x
  2. Step 2: Convert to fraction form
    38,778.87/58,168.61 = 21,239.13/x
  3. Step 3: Cross multiply
    38,778.87x = 58,168.61 × 21,239.13
  4. Step 4: Simplify right side
    38,778.87x = 1,235,450,563.51
  5. Step 5: Solve for x
    x = 1,235,450,563.51/38,778.87
  6. Step 6: Final answer
    x = 31,858.86

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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.