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Finding the Fourth Proportional to 14,408.25, 19,883.39 and 7,784.25

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Solution

The fourth proportional to 14,408.25, 19,883.39 and 7,784.25 is: 10,742.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,408.25 : 19,883.39 = 7,784.25 : x
  2. Step 2: Convert to fraction form
    14,408.25/19,883.39 = 7,784.25/x
  3. Step 3: Cross multiply
    14,408.25x = 19,883.39 × 7,784.25
  4. Step 4: Simplify right side
    14,408.25x = 154,777,239.69
  5. Step 5: Solve for x
    x = 154,777,239.69/14,408.25
  6. Step 6: Final answer
    x = 10,742.27

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.