Home / 30,180.06-45,270.52-9,120.28

Finding the Fourth Proportional to 30,180.06, 45,270.52 and 9,120.28

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Solution

The fourth proportional to 30,180.06, 45,270.52 and 9,120.28 is: 13,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,180.06 : 45,270.52 = 9,120.28 : x
  2. Step 2: Convert to fraction form
    30,180.06/45,270.52 = 9,120.28/x
  3. Step 3: Cross multiply
    30,180.06x = 45,270.52 × 9,120.28
  4. Step 4: Simplify right side
    30,180.06x = 412,879,818.15
  5. Step 5: Solve for x
    x = 412,879,818.15/30,180.06
  6. Step 6: Final answer
    x = 13,680.55

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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.