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Finding the Fourth Proportional to 12,411.60, 18,627.16 and 10,953.68

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Solution

The fourth proportional to 12,411.60, 18,627.16 and 10,953.68 is: 16,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.60 : 18,627.16 = 10,953.68 : x
  2. Step 2: Convert to fraction form
    12,411.60/18,627.16 = 10,953.68/x
  3. Step 3: Cross multiply
    12,411.60x = 18,627.16 × 10,953.68
  4. Step 4: Simplify right side
    12,411.60x = 204,035,949.95
  5. Step 5: Solve for x
    x = 204,035,949.95/12,411.60
  6. Step 6: Final answer
    x = 16,439.13

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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.