Home / 12,220.89-18,334.58-4,430.85

Finding the Fourth Proportional to 12,220.89, 18,334.58 and 4,430.85

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Solution

The fourth proportional to 12,220.89, 18,334.58 and 4,430.85 is: 6,647.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.89 : 18,334.58 = 4,430.85 : x
  2. Step 2: Convert to fraction form
    12,220.89/18,334.58 = 4,430.85/x
  3. Step 3: Cross multiply
    12,220.89x = 18,334.58 × 4,430.85
  4. Step 4: Simplify right side
    12,220.89x = 81,237,751.64
  5. Step 5: Solve for x
    x = 81,237,751.64/12,220.89
  6. Step 6: Final answer
    x = 6,647.45

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Half scale
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Double scale
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Similar ratio
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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.