Home / 12,220.23-18,328.71-3,455.91

Finding the Fourth Proportional to 12,220.23, 18,328.71 and 3,455.91

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Solution

The fourth proportional to 12,220.23, 18,328.71 and 3,455.91 is: 5,183.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.23 : 18,328.71 = 3,455.91 : x
  2. Step 2: Convert to fraction form
    12,220.23/18,328.71 = 3,455.91/x
  3. Step 3: Cross multiply
    12,220.23x = 18,328.71 × 3,455.91
  4. Step 4: Simplify right side
    12,220.23x = 63,342,372.18
  5. Step 5: Solve for x
    x = 63,342,372.18/12,220.23
  6. Step 6: Final answer
    x = 5,183.40

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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.