Home / 11,131.09-15,347.87-8,885.77

Finding the Fourth Proportional to 11,131.09, 15,347.87 and 8,885.77

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Solution

The fourth proportional to 11,131.09, 15,347.87 and 8,885.77 is: 12,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.09 : 15,347.87 = 8,885.77 : x
  2. Step 2: Convert to fraction form
    11,131.09/15,347.87 = 8,885.77/x
  3. Step 3: Cross multiply
    11,131.09x = 15,347.87 × 8,885.77
  4. Step 4: Simplify right side
    11,131.09x = 136,377,642.81
  5. Step 5: Solve for x
    x = 136,377,642.81/11,131.09
  6. Step 6: Final answer
    x = 12,251.96

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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.