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Finding the Fourth Proportional to 14,441.60, 21,597.60 and 12,108.80

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Solution

The fourth proportional to 14,441.60, 21,597.60 and 12,108.80 is: 18,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,441.60 : 21,597.60 = 12,108.80 : x
  2. Step 2: Convert to fraction form
    14,441.60/21,597.60 = 12,108.80/x
  3. Step 3: Cross multiply
    14,441.60x = 21,597.60 × 12,108.80
  4. Step 4: Simplify right side
    14,441.60x = 261,521,018.88
  5. Step 5: Solve for x
    x = 261,521,018.88/14,441.60
  6. Step 6: Final answer
    x = 18,108.87

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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.