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Finding the Fourth Proportional to 18,364.60, 27,546.90 and 16,809.40

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Solution

The fourth proportional to 18,364.60, 27,546.90 and 16,809.40 is: 25,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,364.60 : 27,546.90 = 16,809.40 : x
  2. Step 2: Convert to fraction form
    18,364.60/27,546.90 = 16,809.40/x
  3. Step 3: Cross multiply
    18,364.60x = 27,546.90 × 16,809.40
  4. Step 4: Simplify right side
    18,364.60x = 463,046,860.86
  5. Step 5: Solve for x
    x = 463,046,860.86/18,364.60
  6. Step 6: Final answer
    x = 25,214.10

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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.