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Finding the Fourth Proportional to 38,274.02, 57,410.62 and 11,978.99

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Solution

The fourth proportional to 38,274.02, 57,410.62 and 11,978.99 is: 17,968.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,274.02 : 57,410.62 = 11,978.99 : x
  2. Step 2: Convert to fraction form
    38,274.02/57,410.62 = 11,978.99/x
  3. Step 3: Cross multiply
    38,274.02x = 57,410.62 × 11,978.99
  4. Step 4: Simplify right side
    38,274.02x = 687,720,895.93
  5. Step 5: Solve for x
    x = 687,720,895.93/38,274.02
  6. Step 6: Final answer
    x = 17,968.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.