Home / 30,205.20-45,315.60-11,485.56

Finding the Fourth Proportional to 30,205.20, 45,315.60 and 11,485.56

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Solution

The fourth proportional to 30,205.20, 45,315.60 and 11,485.56 is: 17,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,205.20 : 45,315.60 = 11,485.56 : x
  2. Step 2: Convert to fraction form
    30,205.20/45,315.60 = 11,485.56/x
  3. Step 3: Cross multiply
    30,205.20x = 45,315.60 × 11,485.56
  4. Step 4: Simplify right side
    30,205.20x = 520,475,042.74
  5. Step 5: Solve for x
    x = 520,475,042.74/30,205.20
  6. Step 6: Final answer
    x = 17,231.31

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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.