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Finding the Fourth Proportional to 14,514.80, 21,820.80 and 12,376.40

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Solution

The fourth proportional to 14,514.80, 21,820.80 and 12,376.40 is: 18,606.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,514.80 : 21,820.80 = 12,376.40 : x
  2. Step 2: Convert to fraction form
    14,514.80/21,820.80 = 12,376.40/x
  3. Step 3: Cross multiply
    14,514.80x = 21,820.80 × 12,376.40
  4. Step 4: Simplify right side
    14,514.80x = 270,062,949.12
  5. Step 5: Solve for x
    x = 270,062,949.12/14,514.80
  6. Step 6: Final answer
    x = 18,606.04

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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.