Home / 19,688.56-27,170.34-11,731.12

Finding the Fourth Proportional to 19,688.56, 27,170.34 and 11,731.12

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Solution

The fourth proportional to 19,688.56, 27,170.34 and 11,731.12 is: 16,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.56 : 27,170.34 = 11,731.12 : x
  2. Step 2: Convert to fraction form
    19,688.56/27,170.34 = 11,731.12/x
  3. Step 3: Cross multiply
    19,688.56x = 27,170.34 × 11,731.12
  4. Step 4: Simplify right side
    19,688.56x = 318,738,518.98
  5. Step 5: Solve for x
    x = 318,738,518.98/19,688.56
  6. Step 6: Final answer
    x = 16,189.02

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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.