Home / 12,216.30-18,324.45-8,328.30

Finding the Fourth Proportional to 12,216.30, 18,324.45 and 8,328.30

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Solution

The fourth proportional to 12,216.30, 18,324.45 and 8,328.30 is: 12,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.30 : 18,324.45 = 8,328.30 : x
  2. Step 2: Convert to fraction form
    12,216.30/18,324.45 = 8,328.30/x
  3. Step 3: Cross multiply
    12,216.30x = 18,324.45 × 8,328.30
  4. Step 4: Simplify right side
    12,216.30x = 152,611,516.94
  5. Step 5: Solve for x
    x = 152,611,516.94/12,216.30
  6. Step 6: Final answer
    x = 12,492.45

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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.