Home / 19,790.56-27,313.50-11,407.12

Finding the Fourth Proportional to 19,790.56, 27,313.50 and 11,407.12

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Solution

The fourth proportional to 19,790.56, 27,313.50 and 11,407.12 is: 15,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.56 : 27,313.50 = 11,407.12 : x
  2. Step 2: Convert to fraction form
    19,790.56/27,313.50 = 11,407.12/x
  3. Step 3: Cross multiply
    19,790.56x = 27,313.50 × 11,407.12
  4. Step 4: Simplify right side
    19,790.56x = 311,568,372.12
  5. Step 5: Solve for x
    x = 311,568,372.12/19,790.56
  6. Step 6: Final answer
    x = 15,743.28

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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.