Home / 39,080.40-53,930.88-21,175.86

Finding the Fourth Proportional to 39,080.40, 53,930.88 and 21,175.86

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Solution

The fourth proportional to 39,080.40, 53,930.88 and 21,175.86 is: 29,222.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,080.40 : 53,930.88 = 21,175.86 : x
  2. Step 2: Convert to fraction form
    39,080.40/53,930.88 = 21,175.86/x
  3. Step 3: Cross multiply
    39,080.40x = 53,930.88 × 21,175.86
  4. Step 4: Simplify right side
    39,080.40x = 1,142,032,764.56
  5. Step 5: Solve for x
    x = 1,142,032,764.56/39,080.40
  6. Step 6: Final answer
    x = 29,222.65

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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.