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Finding the Fourth Proportional to 15,514.76, 21,408.76 and 9,054.60

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Solution

The fourth proportional to 15,514.76, 21,408.76 and 9,054.60 is: 12,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.76 : 21,408.76 = 9,054.60 : x
  2. Step 2: Convert to fraction form
    15,514.76/21,408.76 = 9,054.60/x
  3. Step 3: Cross multiply
    15,514.76x = 21,408.76 × 9,054.60
  4. Step 4: Simplify right side
    15,514.76x = 193,847,758.30
  5. Step 5: Solve for x
    x = 193,847,758.30/15,514.76
  6. Step 6: Final answer
    x = 12,494.41

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Half scale
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Double scale
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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.