Home / 28,917.19-39,908.30-18,169.51

Finding the Fourth Proportional to 28,917.19, 39,908.30 and 18,169.51

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Solution

The fourth proportional to 28,917.19, 39,908.30 and 18,169.51 is: 25,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.19 : 39,908.30 = 18,169.51 : x
  2. Step 2: Convert to fraction form
    28,917.19/39,908.30 = 18,169.51/x
  3. Step 3: Cross multiply
    28,917.19x = 39,908.30 × 18,169.51
  4. Step 4: Simplify right side
    28,917.19x = 725,114,255.93
  5. Step 5: Solve for x
    x = 725,114,255.93/28,917.19
  6. Step 6: Final answer
    x = 25,075.54

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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.