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Finding the Fourth Proportional to 30,672.78, 45,998.73 and 11,951.34

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Solution

The fourth proportional to 30,672.78, 45,998.73 and 11,951.34 is: 17,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.78 : 45,998.73 = 11,951.34 : x
  2. Step 2: Convert to fraction form
    30,672.78/45,998.73 = 11,951.34/x
  3. Step 3: Cross multiply
    30,672.78x = 45,998.73 × 11,951.34
  4. Step 4: Simplify right side
    30,672.78x = 549,746,461.80
  5. Step 5: Solve for x
    x = 549,746,461.80/30,672.78
  6. Step 6: Final answer
    x = 17,922.94

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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.