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Finding the Fourth Proportional to 39,199.88, 54,096.81 and 21,294.88

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Solution

The fourth proportional to 39,199.88, 54,096.81 and 21,294.88 is: 29,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,199.88 : 54,096.81 = 21,294.88 : x
  2. Step 2: Convert to fraction form
    39,199.88/54,096.81 = 21,294.88/x
  3. Step 3: Cross multiply
    39,199.88x = 54,096.81 × 21,294.88
  4. Step 4: Simplify right side
    39,199.88x = 1,151,985,077.33
  5. Step 5: Solve for x
    x = 1,151,985,077.33/39,199.88
  6. Step 6: Final answer
    x = 29,387.46

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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.