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Finding the Fourth Proportional to 14,405.80, 21,608.70 and 8,997.70

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Solution

The fourth proportional to 14,405.80, 21,608.70 and 8,997.70 is: 13,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.80 : 21,608.70 = 8,997.70 : x
  2. Step 2: Convert to fraction form
    14,405.80/21,608.70 = 8,997.70/x
  3. Step 3: Cross multiply
    14,405.80x = 21,608.70 × 8,997.70
  4. Step 4: Simplify right side
    14,405.80x = 194,428,599.99
  5. Step 5: Solve for x
    x = 194,428,599.99/14,405.80
  6. Step 6: Final answer
    x = 13,496.55

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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.