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Finding the Fourth Proportional to 38,759.58, 53,487.54 and 21,763.96

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Solution

The fourth proportional to 38,759.58, 53,487.54 and 21,763.96 is: 30,033.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,759.58 : 53,487.54 = 21,763.96 : x
  2. Step 2: Convert to fraction form
    38,759.58/53,487.54 = 21,763.96/x
  3. Step 3: Cross multiply
    38,759.58x = 53,487.54 × 21,763.96
  4. Step 4: Simplify right side
    38,759.58x = 1,164,100,547.34
  5. Step 5: Solve for x
    x = 1,164,100,547.34/38,759.58
  6. Step 6: Final answer
    x = 30,033.88

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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.