Home / 11,129.09-15,345.11-8,883.77

Finding the Fourth Proportional to 11,129.09, 15,345.11 and 8,883.77

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Solution

The fourth proportional to 11,129.09, 15,345.11 and 8,883.77 is: 12,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.09 : 15,345.11 = 8,883.77 : x
  2. Step 2: Convert to fraction form
    11,129.09/15,345.11 = 8,883.77/x
  3. Step 3: Cross multiply
    11,129.09x = 15,345.11 × 8,883.77
  4. Step 4: Simplify right side
    11,129.09x = 136,322,373.35
  5. Step 5: Solve for x
    x = 136,322,373.35/11,129.09
  6. Step 6: Final answer
    x = 12,249.20

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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.