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Finding the Fourth Proportional to 38,759.52, 53,482.56 and 21,764.64

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Solution

The fourth proportional to 38,759.52, 53,482.56 and 21,764.64 is: 30,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,759.52 : 53,482.56 = 21,764.64 : x
  2. Step 2: Convert to fraction form
    38,759.52/53,482.56 = 21,764.64/x
  3. Step 3: Cross multiply
    38,759.52x = 53,482.56 × 21,764.64
  4. Step 4: Simplify right side
    38,759.52x = 1,164,028,664.68
  5. Step 5: Solve for x
    x = 1,164,028,664.68/38,759.52
  6. Step 6: Final answer
    x = 30,032.07

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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.