Home / 11,889.50-16,408.04-6,512.31

Finding the Fourth Proportional to 11,889.50, 16,408.04 and 6,512.31

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Solution

The fourth proportional to 11,889.50, 16,408.04 and 6,512.31 is: 8,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.50 : 16,408.04 = 6,512.31 : x
  2. Step 2: Convert to fraction form
    11,889.50/16,408.04 = 6,512.31/x
  3. Step 3: Cross multiply
    11,889.50x = 16,408.04 × 6,512.31
  4. Step 4: Simplify right side
    11,889.50x = 106,854,210.41
  5. Step 5: Solve for x
    x = 106,854,210.41/11,889.50
  6. Step 6: Final answer
    x = 8,987.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.