Home / 11,167.37-15,408.78-6,689.49

Finding the Fourth Proportional to 11,167.37, 15,408.78 and 6,689.49

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Solution

The fourth proportional to 11,167.37, 15,408.78 and 6,689.49 is: 9,230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.37 : 15,408.78 = 6,689.49 : x
  2. Step 2: Convert to fraction form
    11,167.37/15,408.78 = 6,689.49/x
  3. Step 3: Cross multiply
    11,167.37x = 15,408.78 × 6,689.49
  4. Step 4: Simplify right side
    11,167.37x = 103,076,834.48
  5. Step 5: Solve for x
    x = 103,076,834.48/11,167.37
  6. Step 6: Final answer
    x = 9,230.18

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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.