Home / 20,178.49-30,267.87-7,031.11

Finding the Fourth Proportional to 20,178.49, 30,267.87 and 7,031.11

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Solution

The fourth proportional to 20,178.49, 30,267.87 and 7,031.11 is: 10,546.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.49 : 30,267.87 = 7,031.11 : x
  2. Step 2: Convert to fraction form
    20,178.49/30,267.87 = 7,031.11/x
  3. Step 3: Cross multiply
    20,178.49x = 30,267.87 × 7,031.11
  4. Step 4: Simplify right side
    20,178.49x = 212,816,723.44
  5. Step 5: Solve for x
    x = 212,816,723.44/20,178.49
  6. Step 6: Final answer
    x = 10,546.71

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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.