Home / 12,288.20-18,427.61-4,389.23

Finding the Fourth Proportional to 12,288.20, 18,427.61 and 4,389.23

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Solution

The fourth proportional to 12,288.20, 18,427.61 and 4,389.23 is: 6,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.20 : 18,427.61 = 4,389.23 : x
  2. Step 2: Convert to fraction form
    12,288.20/18,427.61 = 4,389.23/x
  3. Step 3: Cross multiply
    12,288.20x = 18,427.61 × 4,389.23
  4. Step 4: Simplify right side
    12,288.20x = 80,882,904.56
  5. Step 5: Solve for x
    x = 80,882,904.56/12,288.20
  6. Step 6: Final answer
    x = 6,582.16

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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.