Home / 39,161.19-54,040.99-21,255.81

Finding the Fourth Proportional to 39,161.19, 54,040.99 and 21,255.81

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Solution

The fourth proportional to 39,161.19, 54,040.99 and 21,255.81 is: 29,332.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161.19 : 54,040.99 = 21,255.81 : x
  2. Step 2: Convert to fraction form
    39,161.19/54,040.99 = 21,255.81/x
  3. Step 3: Cross multiply
    39,161.19x = 54,040.99 × 21,255.81
  4. Step 4: Simplify right side
    39,161.19x = 1,148,685,015.65
  5. Step 5: Solve for x
    x = 1,148,685,015.65/39,161.19
  6. Step 6: Final answer
    x = 29,332.23

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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.