Home / 14,687.28-20,268.09-8,399.28

Finding the Fourth Proportional to 14,687.28, 20,268.09 and 8,399.28

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Solution

The fourth proportional to 14,687.28, 20,268.09 and 8,399.28 is: 11,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.28 : 20,268.09 = 8,399.28 : x
  2. Step 2: Convert to fraction form
    14,687.28/20,268.09 = 8,399.28/x
  3. Step 3: Cross multiply
    14,687.28x = 20,268.09 × 8,399.28
  4. Step 4: Simplify right side
    14,687.28x = 170,237,362.98
  5. Step 5: Solve for x
    x = 170,237,362.98/14,687.28
  6. Step 6: Final answer
    x = 11,590.80

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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.