Home / 12,247.24-18,378.30-4,455.40

Finding the Fourth Proportional to 12,247.24, 18,378.30 and 4,455.40

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Solution

The fourth proportional to 12,247.24, 18,378.30 and 4,455.40 is: 6,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.24 : 18,378.30 = 4,455.40 : x
  2. Step 2: Convert to fraction form
    12,247.24/18,378.30 = 4,455.40/x
  3. Step 3: Cross multiply
    12,247.24x = 18,378.30 × 4,455.40
  4. Step 4: Simplify right side
    12,247.24x = 81,882,677.82
  5. Step 5: Solve for x
    x = 81,882,677.82/12,247.24
  6. Step 6: Final answer
    x = 6,685.81

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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.