Home / 11,439.21-17,133.30-9,689.61

Finding the Fourth Proportional to 11,439.21, 17,133.30 and 9,689.61

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Solution

The fourth proportional to 11,439.21, 17,133.30 and 9,689.61 is: 14,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.21 : 17,133.30 = 9,689.61 : x
  2. Step 2: Convert to fraction form
    11,439.21/17,133.30 = 9,689.61/x
  3. Step 3: Cross multiply
    11,439.21x = 17,133.30 × 9,689.61
  4. Step 4: Simplify right side
    11,439.21x = 166,014,995.01
  5. Step 5: Solve for x
    x = 166,014,995.01/11,439.21
  6. Step 6: Final answer
    x = 14,512.80

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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.