Home / 18,871.64-28,311.61-5,725.07

Finding the Fourth Proportional to 18,871.64, 28,311.61 and 5,725.07

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Solution

The fourth proportional to 18,871.64, 28,311.61 and 5,725.07 is: 8,588.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.64 : 28,311.61 = 5,725.07 : x
  2. Step 2: Convert to fraction form
    18,871.64/28,311.61 = 5,725.07/x
  3. Step 3: Cross multiply
    18,871.64x = 28,311.61 × 5,725.07
  4. Step 4: Simplify right side
    18,871.64x = 162,085,949.06
  5. Step 5: Solve for x
    x = 162,085,949.06/18,871.64
  6. Step 6: Final answer
    x = 8,588.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.