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Finding the Fourth Proportional to 30,673.44, 45,979.16 and 11,941.80

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Solution

The fourth proportional to 30,673.44, 45,979.16 and 11,941.80 is: 17,900.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,673.44 : 45,979.16 = 11,941.80 : x
  2. Step 2: Convert to fraction form
    30,673.44/45,979.16 = 11,941.80/x
  3. Step 3: Cross multiply
    30,673.44x = 45,979.16 × 11,941.80
  4. Step 4: Simplify right side
    30,673.44x = 549,073,932.89
  5. Step 5: Solve for x
    x = 549,073,932.89/30,673.44
  6. Step 6: Final answer
    x = 17,900.63

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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.