Home / 38,512.68-53,145.83-21,516.86

Finding the Fourth Proportional to 38,512.68, 53,145.83 and 21,516.86

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Solution

The fourth proportional to 38,512.68, 53,145.83 and 21,516.86 is: 29,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.68 : 53,145.83 = 21,516.86 : x
  2. Step 2: Convert to fraction form
    38,512.68/53,145.83 = 21,516.86/x
  3. Step 3: Cross multiply
    38,512.68x = 53,145.83 × 21,516.86
  4. Step 4: Simplify right side
    38,512.68x = 1,143,531,010.38
  5. Step 5: Solve for x
    x = 1,143,531,010.38/38,512.68
  6. Step 6: Final answer
    x = 29,692.32

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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.