Home / 30,208.80-45,313.20-10,485.30

Finding the Fourth Proportional to 30,208.80, 45,313.20 and 10,485.30

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Solution

The fourth proportional to 30,208.80, 45,313.20 and 10,485.30 is: 15,727.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,208.80 : 45,313.20 = 10,485.30 : x
  2. Step 2: Convert to fraction form
    30,208.80/45,313.20 = 10,485.30/x
  3. Step 3: Cross multiply
    30,208.80x = 45,313.20 × 10,485.30
  4. Step 4: Simplify right side
    30,208.80x = 475,122,495.96
  5. Step 5: Solve for x
    x = 475,122,495.96/30,208.80
  6. Step 6: Final answer
    x = 15,727.95

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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.