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Finding the Fourth Proportional to 30,630.72, 45,924.48 and 11,895.15

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Solution

The fourth proportional to 30,630.72, 45,924.48 and 11,895.15 is: 17,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.72 : 45,924.48 = 11,895.15 : x
  2. Step 2: Convert to fraction form
    30,630.72/45,924.48 = 11,895.15/x
  3. Step 3: Cross multiply
    30,630.72x = 45,924.48 × 11,895.15
  4. Step 4: Simplify right side
    30,630.72x = 546,278,578.27
  5. Step 5: Solve for x
    x = 546,278,578.27/30,630.72
  6. Step 6: Final answer
    x = 17,834.34

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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.