Home / 14,220.56-21,330.77-3,690.58

Finding the Fourth Proportional to 14,220.56, 21,330.77 and 3,690.58

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Solution

The fourth proportional to 14,220.56, 21,330.77 and 3,690.58 is: 5,535.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.56 : 21,330.77 = 3,690.58 : x
  2. Step 2: Convert to fraction form
    14,220.56/21,330.77 = 3,690.58/x
  3. Step 3: Cross multiply
    14,220.56x = 21,330.77 × 3,690.58
  4. Step 4: Simplify right side
    14,220.56x = 78,722,801.75
  5. Step 5: Solve for x
    x = 78,722,801.75/14,220.56
  6. Step 6: Final answer
    x = 5,535.84

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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.