Home / 16,986.20-23,431.30-10,687.64

Finding the Fourth Proportional to 16,986.20, 23,431.30 and 10,687.64

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Solution

The fourth proportional to 16,986.20, 23,431.30 and 10,687.64 is: 14,742.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.20 : 23,431.30 = 10,687.64 : x
  2. Step 2: Convert to fraction form
    16,986.20/23,431.30 = 10,687.64/x
  3. Step 3: Cross multiply
    16,986.20x = 23,431.30 × 10,687.64
  4. Step 4: Simplify right side
    16,986.20x = 250,425,299.13
  5. Step 5: Solve for x
    x = 250,425,299.13/16,986.20
  6. Step 6: Final answer
    x = 14,742.87

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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.