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Finding the Fourth Proportional to 13,144.48, 19,716.72 and 7,000.48

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Solution

The fourth proportional to 13,144.48, 19,716.72 and 7,000.48 is: 10,500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.48 : 19,716.72 = 7,000.48 : x
  2. Step 2: Convert to fraction form
    13,144.48/19,716.72 = 7,000.48/x
  3. Step 3: Cross multiply
    13,144.48x = 19,716.72 × 7,000.48
  4. Step 4: Simplify right side
    13,144.48x = 138,026,504.03
  5. Step 5: Solve for x
    x = 138,026,504.03/13,144.48
  6. Step 6: Final answer
    x = 10,500.72

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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.