Home / 38,581.01-53,239.64-21,581.97

Finding the Fourth Proportional to 38,581.01, 53,239.64 and 21,581.97

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Solution

The fourth proportional to 38,581.01, 53,239.64 and 21,581.97 is: 29,781.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,581.01 : 53,239.64 = 21,581.97 : x
  2. Step 2: Convert to fraction form
    38,581.01/53,239.64 = 21,581.97/x
  3. Step 3: Cross multiply
    38,581.01x = 53,239.64 × 21,581.97
  4. Step 4: Simplify right side
    38,581.01x = 1,149,016,313.29
  5. Step 5: Solve for x
    x = 1,149,016,313.29/38,581.01
  6. Step 6: Final answer
    x = 29,781.91

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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.