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Finding the Fourth Proportional to 30,670.94, 45,992.74 and 21,370.72

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Solution

The fourth proportional to 30,670.94, 45,992.74 and 21,370.72 is: 32,046.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,670.94 : 45,992.74 = 21,370.72 : x
  2. Step 2: Convert to fraction form
    30,670.94/45,992.74 = 21,370.72/x
  3. Step 3: Cross multiply
    30,670.94x = 45,992.74 × 21,370.72
  4. Step 4: Simplify right side
    30,670.94x = 982,897,968.57
  5. Step 5: Solve for x
    x = 982,897,968.57/30,670.94
  6. Step 6: Final answer
    x = 32,046.56

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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.