Home / 28,082.82-38,738.22-20,018.28

Finding the Fourth Proportional to 28,082.82, 38,738.22 and 20,018.28

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Solution

The fourth proportional to 28,082.82, 38,738.22 and 20,018.28 is: 27,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.82 : 38,738.22 = 20,018.28 : x
  2. Step 2: Convert to fraction form
    28,082.82/38,738.22 = 20,018.28/x
  3. Step 3: Cross multiply
    28,082.82x = 38,738.22 × 20,018.28
  4. Step 4: Simplify right side
    28,082.82x = 775,472,534.66
  5. Step 5: Solve for x
    x = 775,472,534.66/28,082.82
  6. Step 6: Final answer
    x = 27,613.77

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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.