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Finding the Fourth Proportional to 18,919.00, 28,334.76 and 18,262.90

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Solution

The fourth proportional to 18,919.00, 28,334.76 and 18,262.90 is: 27,352.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.00 : 28,334.76 = 18,262.90 : x
  2. Step 2: Convert to fraction form
    18,919.00/28,334.76 = 18,262.90/x
  3. Step 3: Cross multiply
    18,919.00x = 28,334.76 × 18,262.90
  4. Step 4: Simplify right side
    18,919.00x = 517,474,958.07
  5. Step 5: Solve for x
    x = 517,474,958.07/18,919.00
  6. Step 6: Final answer
    x = 27,352.13

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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.