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Finding the Fourth Proportional to 30,363.48, 45,569.52 and 12,845.52

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Solution

The fourth proportional to 30,363.48, 45,569.52 and 12,845.52 is: 19,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.48 : 45,569.52 = 12,845.52 : x
  2. Step 2: Convert to fraction form
    30,363.48/45,569.52 = 12,845.52/x
  3. Step 3: Cross multiply
    30,363.48x = 45,569.52 × 12,845.52
  4. Step 4: Simplify right side
    30,363.48x = 585,364,180.55
  5. Step 5: Solve for x
    x = 585,364,180.55/30,363.48
  6. Step 6: Final answer
    x = 19,278.56

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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.