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Finding the Fourth Proportional to 38,757.51, 53,486.37 and 21,763.10

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Solution

The fourth proportional to 38,757.51, 53,486.37 and 21,763.10 is: 30,033.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,757.51 : 53,486.37 = 21,763.10 : x
  2. Step 2: Convert to fraction form
    38,757.51/53,486.37 = 21,763.10/x
  3. Step 3: Cross multiply
    38,757.51x = 53,486.37 × 21,763.10
  4. Step 4: Simplify right side
    38,757.51x = 1,164,028,951.52
  5. Step 5: Solve for x
    x = 1,164,028,951.52/38,757.51
  6. Step 6: Final answer
    x = 30,033.64

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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.