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Finding the Fourth Proportional to 18,520.49, 27,784.98 and 5,373.92

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Solution

The fourth proportional to 18,520.49, 27,784.98 and 5,373.92 is: 8,062.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.49 : 27,784.98 = 5,373.92 : x
  2. Step 2: Convert to fraction form
    18,520.49/27,784.98 = 5,373.92/x
  3. Step 3: Cross multiply
    18,520.49x = 27,784.98 × 5,373.92
  4. Step 4: Simplify right side
    18,520.49x = 149,314,120.80
  5. Step 5: Solve for x
    x = 149,314,120.80/18,520.49
  6. Step 6: Final answer
    x = 8,062.11

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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.