Home / 12,220.40-18,331.85-3,335.91

Finding the Fourth Proportional to 12,220.40, 18,331.85 and 3,335.91

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Solution

The fourth proportional to 12,220.40, 18,331.85 and 3,335.91 is: 5,004.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.40 : 18,331.85 = 3,335.91 : x
  2. Step 2: Convert to fraction form
    12,220.40/18,331.85 = 3,335.91/x
  3. Step 3: Cross multiply
    12,220.40x = 18,331.85 × 3,335.91
  4. Step 4: Simplify right side
    12,220.40x = 61,153,401.73
  5. Step 5: Solve for x
    x = 61,153,401.73/12,220.40
  6. Step 6: Final answer
    x = 5,004.21

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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.