Home / 14,147.40-21,221.10-9,157.80

Finding the Fourth Proportional to 14,147.40, 21,221.10 and 9,157.80

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Solution

The fourth proportional to 14,147.40, 21,221.10 and 9,157.80 is: 13,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.40 : 21,221.10 = 9,157.80 : x
  2. Step 2: Convert to fraction form
    14,147.40/21,221.10 = 9,157.80/x
  3. Step 3: Cross multiply
    14,147.40x = 21,221.10 × 9,157.80
  4. Step 4: Simplify right side
    14,147.40x = 194,338,589.58
  5. Step 5: Solve for x
    x = 194,338,589.58/14,147.40
  6. Step 6: Final answer
    x = 13,736.70

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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.