Home / 12,150.90-18,215.61-4,750.19

Finding the Fourth Proportional to 12,150.90, 18,215.61 and 4,750.19

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Solution

The fourth proportional to 12,150.90, 18,215.61 and 4,750.19 is: 7,121.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.90 : 18,215.61 = 4,750.19 : x
  2. Step 2: Convert to fraction form
    12,150.90/18,215.61 = 4,750.19/x
  3. Step 3: Cross multiply
    12,150.90x = 18,215.61 × 4,750.19
  4. Step 4: Simplify right side
    12,150.90x = 86,527,608.47
  5. Step 5: Solve for x
    x = 86,527,608.47/12,150.90
  6. Step 6: Final answer
    x = 7,121.09

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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.