Home / 38,991.39-53,807.97-21,086.35

Finding the Fourth Proportional to 38,991.39, 53,807.97 and 21,086.35

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Solution

The fourth proportional to 38,991.39, 53,807.97 and 21,086.35 is: 29,099.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.39 : 53,807.97 = 21,086.35 : x
  2. Step 2: Convert to fraction form
    38,991.39/53,807.97 = 21,086.35/x
  3. Step 3: Cross multiply
    38,991.39x = 53,807.97 × 21,086.35
  4. Step 4: Simplify right side
    38,991.39x = 1,134,613,961.76
  5. Step 5: Solve for x
    x = 1,134,613,961.76/38,991.39
  6. Step 6: Final answer
    x = 29,099.09

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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.