Home / 11,718.81-16,174.68-7,182.87

Finding the Fourth Proportional to 11,718.81, 16,174.68 and 7,182.87

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Solution

The fourth proportional to 11,718.81, 16,174.68 and 7,182.87 is: 9,914.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.81 : 16,174.68 = 7,182.87 : x
  2. Step 2: Convert to fraction form
    11,718.81/16,174.68 = 7,182.87/x
  3. Step 3: Cross multiply
    11,718.81x = 16,174.68 × 7,182.87
  4. Step 4: Simplify right side
    11,718.81x = 116,180,623.73
  5. Step 5: Solve for x
    x = 116,180,623.73/11,718.81
  6. Step 6: Final answer
    x = 9,914.03

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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.