Home / 19,984.12-29,993.46-7,680.76

Finding the Fourth Proportional to 19,984.12, 29,993.46 and 7,680.76

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Solution

The fourth proportional to 19,984.12, 29,993.46 and 7,680.76 is: 11,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,984.12 : 29,993.46 = 7,680.76 : x
  2. Step 2: Convert to fraction form
    19,984.12/29,993.46 = 7,680.76/x
  3. Step 3: Cross multiply
    19,984.12x = 29,993.46 × 7,680.76
  4. Step 4: Simplify right side
    19,984.12x = 230,372,567.83
  5. Step 5: Solve for x
    x = 230,372,567.83/19,984.12
  6. Step 6: Final answer
    x = 11,527.78

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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.