Home / 38,638.39-53,316.55-21,640.27

Finding the Fourth Proportional to 38,638.39, 53,316.55 and 21,640.27

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Solution

The fourth proportional to 38,638.39, 53,316.55 and 21,640.27 is: 29,861.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.39 : 53,316.55 = 21,640.27 : x
  2. Step 2: Convert to fraction form
    38,638.39/53,316.55 = 21,640.27/x
  3. Step 3: Cross multiply
    38,638.39x = 53,316.55 × 21,640.27
  4. Step 4: Simplify right side
    38,638.39x = 1,153,784,537.47
  5. Step 5: Solve for x
    x = 1,153,784,537.47/38,638.39
  6. Step 6: Final answer
    x = 29,861.09

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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.