Home / 38,879.30-53,645.91-21,881.28

Finding the Fourth Proportional to 38,879.30, 53,645.91 and 21,881.28

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Solution

The fourth proportional to 38,879.30, 53,645.91 and 21,881.28 is: 30,191.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,879.30 : 53,645.91 = 21,881.28 : x
  2. Step 2: Convert to fraction form
    38,879.30/53,645.91 = 21,881.28/x
  3. Step 3: Cross multiply
    38,879.30x = 53,645.91 × 21,881.28
  4. Step 4: Simplify right side
    38,879.30x = 1,173,841,177.56
  5. Step 5: Solve for x
    x = 1,173,841,177.56/38,879.30
  6. Step 6: Final answer
    x = 30,191.93

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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.