Home / 12,178.20-18,267.30-4,384.20

Finding the Fourth Proportional to 12,178.20, 18,267.30 and 4,384.20

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Solution

The fourth proportional to 12,178.20, 18,267.30 and 4,384.20 is: 6,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.20 : 18,267.30 = 4,384.20 : x
  2. Step 2: Convert to fraction form
    12,178.20/18,267.30 = 4,384.20/x
  3. Step 3: Cross multiply
    12,178.20x = 18,267.30 × 4,384.20
  4. Step 4: Simplify right side
    12,178.20x = 80,087,496.66
  5. Step 5: Solve for x
    x = 80,087,496.66/12,178.20
  6. Step 6: Final answer
    x = 6,576.30

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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.