Home / 20,139.82-30,207.36-5,349.88

Finding the Fourth Proportional to 20,139.82, 30,207.36 and 5,349.88

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Solution

The fourth proportional to 20,139.82, 30,207.36 and 5,349.88 is: 8,024.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.82 : 30,207.36 = 5,349.88 : x
  2. Step 2: Convert to fraction form
    20,139.82/30,207.36 = 5,349.88/x
  3. Step 3: Cross multiply
    20,139.82x = 30,207.36 × 5,349.88
  4. Step 4: Simplify right side
    20,139.82x = 161,605,808.94
  5. Step 5: Solve for x
    x = 161,605,808.94/20,139.82
  6. Step 6: Final answer
    x = 8,024.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.