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Finding the Fourth Proportional to 14,663.70, 21,995.55 and 13,679.55

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Solution

The fourth proportional to 14,663.70, 21,995.55 and 13,679.55 is: 20,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.70 : 21,995.55 = 13,679.55 : x
  2. Step 2: Convert to fraction form
    14,663.70/21,995.55 = 13,679.55/x
  3. Step 3: Cross multiply
    14,663.70x = 21,995.55 × 13,679.55
  4. Step 4: Simplify right side
    14,663.70x = 300,889,226.00
  5. Step 5: Solve for x
    x = 300,889,226.00/14,663.70
  6. Step 6: Final answer
    x = 20,519.33

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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.