Home / 30,255.50-45,383.26-9,479

Finding the Fourth Proportional to 30,255.50, 45,383.26 and 9,479

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Solution

The fourth proportional to 30,255.50, 45,383.26 and 9,479 is: 14,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.50 : 45,383.26 = 9,479 : x
  2. Step 2: Convert to fraction form
    30,255.50/45,383.26 = 9,479/x
  3. Step 3: Cross multiply
    30,255.50x = 45,383.26 × 9,479
  4. Step 4: Simplify right side
    30,255.50x = 430,187,921.54
  5. Step 5: Solve for x
    x = 430,187,921.54/30,255.50
  6. Step 6: Final answer
    x = 14,218.50

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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.