Home / 19,687.56-27,168.96-11,730.12

Finding the Fourth Proportional to 19,687.56, 27,168.96 and 11,730.12

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Solution

The fourth proportional to 19,687.56, 27,168.96 and 11,730.12 is: 16,187.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.56 : 27,168.96 = 11,730.12 : x
  2. Step 2: Convert to fraction form
    19,687.56/27,168.96 = 11,730.12/x
  3. Step 3: Cross multiply
    19,687.56x = 27,168.96 × 11,730.12
  4. Step 4: Simplify right side
    19,687.56x = 318,695,161.08
  5. Step 5: Solve for x
    x = 318,695,161.08/19,687.56
  6. Step 6: Final answer
    x = 16,187.64

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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.