Home / 39,033.35-53,865.87-21,128.66

Finding the Fourth Proportional to 39,033.35, 53,865.87 and 21,128.66

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Solution

The fourth proportional to 39,033.35, 53,865.87 and 21,128.66 is: 29,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.35 : 53,865.87 = 21,128.66 : x
  2. Step 2: Convert to fraction form
    39,033.35/53,865.87 = 21,128.66/x
  3. Step 3: Cross multiply
    39,033.35x = 53,865.87 × 21,128.66
  4. Step 4: Simplify right side
    39,033.35x = 1,138,113,652.83
  5. Step 5: Solve for x
    x = 1,138,113,652.83/39,033.35
  6. Step 6: Final answer
    x = 29,157.47

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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.