Home / 38,512.26-53,146.32-21,516.78

Finding the Fourth Proportional to 38,512.26, 53,146.32 and 21,516.78

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Solution

The fourth proportional to 38,512.26, 53,146.32 and 21,516.78 is: 29,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.26 : 53,146.32 = 21,516.78 : x
  2. Step 2: Convert to fraction form
    38,512.26/53,146.32 = 21,516.78/x
  3. Step 3: Cross multiply
    38,512.26x = 53,146.32 × 21,516.78
  4. Step 4: Simplify right side
    38,512.26x = 1,143,537,675.25
  5. Step 5: Solve for x
    x = 1,143,537,675.25/38,512.26
  6. Step 6: Final answer
    x = 29,692.82

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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.