Home / 11,165.36-15,408.13-6,129.66

Finding the Fourth Proportional to 11,165.36, 15,408.13 and 6,129.66

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Solution

The fourth proportional to 11,165.36, 15,408.13 and 6,129.66 is: 8,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.36 : 15,408.13 = 6,129.66 : x
  2. Step 2: Convert to fraction form
    11,165.36/15,408.13 = 6,129.66/x
  3. Step 3: Cross multiply
    11,165.36x = 15,408.13 × 6,129.66
  4. Step 4: Simplify right side
    11,165.36x = 94,446,582.81
  5. Step 5: Solve for x
    x = 94,446,582.81/11,165.36
  6. Step 6: Final answer
    x = 8,458.90

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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.