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Finding the Fourth Proportional to 18,775.81, 28,173.43 and 8,253.22

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Solution

The fourth proportional to 18,775.81, 28,173.43 and 8,253.22 is: 12,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.81 : 28,173.43 = 8,253.22 : x
  2. Step 2: Convert to fraction form
    18,775.81/28,173.43 = 8,253.22/x
  3. Step 3: Cross multiply
    18,775.81x = 28,173.43 × 8,253.22
  4. Step 4: Simplify right side
    18,775.81x = 232,521,515.94
  5. Step 5: Solve for x
    x = 232,521,515.94/18,775.81
  6. Step 6: Final answer
    x = 12,384.10

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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.