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Finding the Fourth Proportional to 9,479.62, 14,219.43 and 9,220.42

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Solution

The fourth proportional to 9,479.62, 14,219.43 and 9,220.42 is: 13,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.62 : 14,219.43 = 9,220.42 : x
  2. Step 2: Convert to fraction form
    9,479.62/14,219.43 = 9,220.42/x
  3. Step 3: Cross multiply
    9,479.62x = 14,219.43 × 9,220.42
  4. Step 4: Simplify right side
    9,479.62x = 131,109,116.76
  5. Step 5: Solve for x
    x = 131,109,116.76/9,479.62
  6. Step 6: Final answer
    x = 13,830.63

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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.