Home / 39,683.34-54,762.85-21,778.64

Finding the Fourth Proportional to 39,683.34, 54,762.85 and 21,778.64

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Solution

The fourth proportional to 39,683.34, 54,762.85 and 21,778.64 is: 30,054.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,683.34 : 54,762.85 = 21,778.64 : x
  2. Step 2: Convert to fraction form
    39,683.34/54,762.85 = 21,778.64/x
  3. Step 3: Cross multiply
    39,683.34x = 54,762.85 × 21,778.64
  4. Step 4: Simplify right side
    39,683.34x = 1,192,660,395.52
  5. Step 5: Solve for x
    x = 1,192,660,395.52/39,683.34
  6. Step 6: Final answer
    x = 30,054.44

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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.