Home / 38,638.26-53,316.36-21,640.14

Finding the Fourth Proportional to 38,638.26, 53,316.36 and 21,640.14

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Solution

The fourth proportional to 38,638.26, 53,316.36 and 21,640.14 is: 29,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.26 : 53,316.36 = 21,640.14 : x
  2. Step 2: Convert to fraction form
    38,638.26/53,316.36 = 21,640.14/x
  3. Step 3: Cross multiply
    38,638.26x = 53,316.36 × 21,640.14
  4. Step 4: Simplify right side
    38,638.26x = 1,153,773,494.69
  5. Step 5: Solve for x
    x = 1,153,773,494.69/38,638.26
  6. Step 6: Final answer
    x = 29,860.91

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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.