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Finding the Fourth Proportional to 14,428.62, 21,643.92 and 8,514.15

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Solution

The fourth proportional to 14,428.62, 21,643.92 and 8,514.15 is: 12,771.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.62 : 21,643.92 = 8,514.15 : x
  2. Step 2: Convert to fraction form
    14,428.62/21,643.92 = 8,514.15/x
  3. Step 3: Cross multiply
    14,428.62x = 21,643.92 × 8,514.15
  4. Step 4: Simplify right side
    14,428.62x = 184,279,581.47
  5. Step 5: Solve for x
    x = 184,279,581.47/14,428.62
  6. Step 6: Final answer
    x = 12,771.81

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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.