Home / 38,512.18-53,145.13-21,516.36

Finding the Fourth Proportional to 38,512.18, 53,145.13 and 21,516.36

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Solution

The fourth proportional to 38,512.18, 53,145.13 and 21,516.36 is: 29,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.18 : 53,145.13 = 21,516.36 : x
  2. Step 2: Convert to fraction form
    38,512.18/53,145.13 = 21,516.36/x
  3. Step 3: Cross multiply
    38,512.18x = 53,145.13 × 21,516.36
  4. Step 4: Simplify right side
    38,512.18x = 1,143,489,749.33
  5. Step 5: Solve for x
    x = 1,143,489,749.33/38,512.18
  6. Step 6: Final answer
    x = 29,691.64

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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.