Home / 30,485.25-45,687.78-12,933.36

Finding the Fourth Proportional to 30,485.25, 45,687.78 and 12,933.36

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Solution

The fourth proportional to 30,485.25, 45,687.78 and 12,933.36 is: 19,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.25 : 45,687.78 = 12,933.36 : x
  2. Step 2: Convert to fraction form
    30,485.25/45,687.78 = 12,933.36/x
  3. Step 3: Cross multiply
    30,485.25x = 45,687.78 × 12,933.36
  4. Step 4: Simplify right side
    30,485.25x = 590,896,506.34
  5. Step 5: Solve for x
    x = 590,896,506.34/30,485.25
  6. Step 6: Final answer
    x = 19,383.03

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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.