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Finding the Fourth Proportional to 18,523.70, 27,785.55 and 18,350.90

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Solution

The fourth proportional to 18,523.70, 27,785.55 and 18,350.90 is: 27,526.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.70 : 27,785.55 = 18,350.90 : x
  2. Step 2: Convert to fraction form
    18,523.70/27,785.55 = 18,350.90/x
  3. Step 3: Cross multiply
    18,523.70x = 27,785.55 × 18,350.90
  4. Step 4: Simplify right side
    18,523.70x = 509,889,849.50
  5. Step 5: Solve for x
    x = 509,889,849.50/18,523.70
  6. Step 6: Final answer
    x = 27,526.35

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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.