Home / 11,183.13-15,434.17-7,215.77

Finding the Fourth Proportional to 11,183.13, 15,434.17 and 7,215.77

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Solution

The fourth proportional to 11,183.13, 15,434.17 and 7,215.77 is: 9,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.13 : 15,434.17 = 7,215.77 : x
  2. Step 2: Convert to fraction form
    11,183.13/15,434.17 = 7,215.77/x
  3. Step 3: Cross multiply
    11,183.13x = 15,434.17 × 7,215.77
  4. Step 4: Simplify right side
    11,183.13x = 111,369,441.41
  5. Step 5: Solve for x
    x = 111,369,441.41/11,183.13
  6. Step 6: Final answer
    x = 9,958.70

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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.