Home / 9,619.72-14,428.14-7,986.76

Finding the Fourth Proportional to 9,619.72, 14,428.14 and 7,986.76

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Solution

The fourth proportional to 9,619.72, 14,428.14 and 7,986.76 is: 11,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,619.72 : 14,428.14 = 7,986.76 : x
  2. Step 2: Convert to fraction form
    9,619.72/14,428.14 = 7,986.76/x
  3. Step 3: Cross multiply
    9,619.72x = 14,428.14 × 7,986.76
  4. Step 4: Simplify right side
    9,619.72x = 115,234,091.43
  5. Step 5: Solve for x
    x = 115,234,091.43/9,619.72
  6. Step 6: Final answer
    x = 11,978.94

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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.