Home / 12,217.35-18,328.35-4,209.99

Finding the Fourth Proportional to 12,217.35, 18,328.35 and 4,209.99

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Solution

The fourth proportional to 12,217.35, 18,328.35 and 4,209.99 is: 6,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.35 : 18,328.35 = 4,209.99 : x
  2. Step 2: Convert to fraction form
    12,217.35/18,328.35 = 4,209.99/x
  3. Step 3: Cross multiply
    12,217.35x = 18,328.35 × 4,209.99
  4. Step 4: Simplify right side
    12,217.35x = 77,162,149.17
  5. Step 5: Solve for x
    x = 77,162,149.17/12,217.35
  6. Step 6: Final answer
    x = 6,315.78

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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.