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Finding the Fourth Proportional to 18,000.81, 24,812.83 and 12,325.74

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Solution

The fourth proportional to 18,000.81, 24,812.83 and 12,325.74 is: 16,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.81 : 24,812.83 = 12,325.74 : x
  2. Step 2: Convert to fraction form
    18,000.81/24,812.83 = 12,325.74/x
  3. Step 3: Cross multiply
    18,000.81x = 24,812.83 × 12,325.74
  4. Step 4: Simplify right side
    18,000.81x = 305,836,491.24
  5. Step 5: Solve for x
    x = 305,836,491.24/18,000.81
  6. Step 6: Final answer
    x = 16,990.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.