Home / 38,863.75-53,636.33-21,872.13

Finding the Fourth Proportional to 38,863.75, 53,636.33 and 21,872.13

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Solution

The fourth proportional to 38,863.75, 53,636.33 and 21,872.13 is: 30,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,863.75 : 53,636.33 = 21,872.13 : x
  2. Step 2: Convert to fraction form
    38,863.75/53,636.33 = 21,872.13/x
  3. Step 3: Cross multiply
    38,863.75x = 53,636.33 × 21,872.13
  4. Step 4: Simplify right side
    38,863.75x = 1,173,140,513.00
  5. Step 5: Solve for x
    x = 1,173,140,513.00/38,863.75
  6. Step 6: Final answer
    x = 30,185.98

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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.