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Finding the Fourth Proportional to 38,414.88, 53,012.53 and 20,750.88

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Solution

The fourth proportional to 38,414.88, 53,012.53 and 20,750.88 is: 28,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,414.88 : 53,012.53 = 20,750.88 : x
  2. Step 2: Convert to fraction form
    38,414.88/53,012.53 = 20,750.88/x
  3. Step 3: Cross multiply
    38,414.88x = 53,012.53 × 20,750.88
  4. Step 4: Simplify right side
    38,414.88x = 1,100,056,383.46
  5. Step 5: Solve for x
    x = 1,100,056,383.46/38,414.88
  6. Step 6: Final answer
    x = 28,636.21

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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.