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Finding the Fourth Proportional to 30,004.78, 45,012.04 and 9,228.28

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Solution

The fourth proportional to 30,004.78, 45,012.04 and 9,228.28 is: 13,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,004.78 : 45,012.04 = 9,228.28 : x
  2. Step 2: Convert to fraction form
    30,004.78/45,012.04 = 9,228.28/x
  3. Step 3: Cross multiply
    30,004.78x = 45,012.04 × 9,228.28
  4. Step 4: Simplify right side
    30,004.78x = 415,383,708.49
  5. Step 5: Solve for x
    x = 415,383,708.49/30,004.78
  6. Step 6: Final answer
    x = 13,843.92

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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.