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Finding the Fourth Proportional to 14,411.60, 21,552.60 and 12,078.80

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Solution

The fourth proportional to 14,411.60, 21,552.60 and 12,078.80 is: 18,063.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,411.60 : 21,552.60 = 12,078.80 : x
  2. Step 2: Convert to fraction form
    14,411.60/21,552.60 = 12,078.80/x
  3. Step 3: Cross multiply
    14,411.60x = 21,552.60 × 12,078.80
  4. Step 4: Simplify right side
    14,411.60x = 260,329,544.88
  5. Step 5: Solve for x
    x = 260,329,544.88/14,411.60
  6. Step 6: Final answer
    x = 18,063.89

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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.