Home / 30,548.36-45,790.56-12,789.20

Finding the Fourth Proportional to 30,548.36, 45,790.56 and 12,789.20

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Solution

The fourth proportional to 30,548.36, 45,790.56 and 12,789.20 is: 19,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,548.36 : 45,790.56 = 12,789.20 : x
  2. Step 2: Convert to fraction form
    30,548.36/45,790.56 = 12,789.20/x
  3. Step 3: Cross multiply
    30,548.36x = 45,790.56 × 12,789.20
  4. Step 4: Simplify right side
    30,548.36x = 585,624,629.95
  5. Step 5: Solve for x
    x = 585,624,629.95/30,548.36
  6. Step 6: Final answer
    x = 19,170.41

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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.