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Finding the Fourth Proportional to 18,654.40, 27,981.60 and 16,467.40

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Solution

The fourth proportional to 18,654.40, 27,981.60 and 16,467.40 is: 24,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.40 : 27,981.60 = 16,467.40 : x
  2. Step 2: Convert to fraction form
    18,654.40/27,981.60 = 16,467.40/x
  3. Step 3: Cross multiply
    18,654.40x = 27,981.60 × 16,467.40
  4. Step 4: Simplify right side
    18,654.40x = 460,784,199.84
  5. Step 5: Solve for x
    x = 460,784,199.84/18,654.40
  6. Step 6: Final answer
    x = 24,701.10

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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.