Home / 39,683.63-54,763.85-21,778.25

Finding the Fourth Proportional to 39,683.63, 54,763.85 and 21,778.25

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Solution

The fourth proportional to 39,683.63, 54,763.85 and 21,778.25 is: 30,054.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,683.63 : 54,763.85 = 21,778.25 : x
  2. Step 2: Convert to fraction form
    39,683.63/54,763.85 = 21,778.25/x
  3. Step 3: Cross multiply
    39,683.63x = 54,763.85 × 21,778.25
  4. Step 4: Simplify right side
    39,683.63x = 1,192,660,666.92
  5. Step 5: Solve for x
    x = 1,192,660,666.92/39,683.63
  6. Step 6: Final answer
    x = 30,054.22

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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.