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Finding the Fourth Proportional to 18,889.84, 28,338.36 and 10,134.52

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Solution

The fourth proportional to 18,889.84, 28,338.36 and 10,134.52 is: 15,203.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.84 : 28,338.36 = 10,134.52 : x
  2. Step 2: Convert to fraction form
    18,889.84/28,338.36 = 10,134.52/x
  3. Step 3: Cross multiply
    18,889.84x = 28,338.36 × 10,134.52
  4. Step 4: Simplify right side
    18,889.84x = 287,195,676.19
  5. Step 5: Solve for x
    x = 287,195,676.19/18,889.84
  6. Step 6: Final answer
    x = 15,203.71

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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.