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Finding the Fourth Proportional to 30,278.88, 45,422.88 and 9,504

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Solution

The fourth proportional to 30,278.88, 45,422.88 and 9,504 is: 14,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.88 : 45,422.88 = 9,504 : x
  2. Step 2: Convert to fraction form
    30,278.88/45,422.88 = 9,504/x
  3. Step 3: Cross multiply
    30,278.88x = 45,422.88 × 9,504
  4. Step 4: Simplify right side
    30,278.88x = 431,699,051.52
  5. Step 5: Solve for x
    x = 431,699,051.52/30,278.88
  6. Step 6: Final answer
    x = 14,257.43

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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.