Home / 20,741.76-30,921.12-19,082.88

Finding the Fourth Proportional to 20,741.76, 30,921.12 and 19,082.88

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Solution

The fourth proportional to 20,741.76, 30,921.12 and 19,082.88 is: 28,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.76 : 30,921.12 = 19,082.88 : x
  2. Step 2: Convert to fraction form
    20,741.76/30,921.12 = 19,082.88/x
  3. Step 3: Cross multiply
    20,741.76x = 30,921.12 × 19,082.88
  4. Step 4: Simplify right side
    20,741.76x = 590,064,022.43
  5. Step 5: Solve for x
    x = 590,064,022.43/20,741.76
  6. Step 6: Final answer
    x = 28,448.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.