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Finding the Fourth Proportional to 18,846.90, 28,227.03 and 10,929.81

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Solution

The fourth proportional to 18,846.90, 28,227.03 and 10,929.81 is: 16,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.90 : 28,227.03 = 10,929.81 : x
  2. Step 2: Convert to fraction form
    18,846.90/28,227.03 = 10,929.81/x
  3. Step 3: Cross multiply
    18,846.90x = 28,227.03 × 10,929.81
  4. Step 4: Simplify right side
    18,846.90x = 308,516,074.76
  5. Step 5: Solve for x
    x = 308,516,074.76/18,846.90
  6. Step 6: Final answer
    x = 16,369.59

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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.