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Finding the Fourth Proportional to 17,689.60, 24,409.60 and 12,108.80

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Solution

The fourth proportional to 17,689.60, 24,409.60 and 12,108.80 is: 16,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,689.60 : 24,409.60 = 12,108.80 : x
  2. Step 2: Convert to fraction form
    17,689.60/24,409.60 = 12,108.80/x
  3. Step 3: Cross multiply
    17,689.60x = 24,409.60 × 12,108.80
  4. Step 4: Simplify right side
    17,689.60x = 295,570,964.48
  5. Step 5: Solve for x
    x = 295,570,964.48/17,689.60
  6. Step 6: Final answer
    x = 16,708.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.