Home / 18,940.72-28,419.27-10,165.38

Finding the Fourth Proportional to 18,940.72, 28,419.27 and 10,165.38

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Solution

The fourth proportional to 18,940.72, 28,419.27 and 10,165.38 is: 15,252.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.72 : 28,419.27 = 10,165.38 : x
  2. Step 2: Convert to fraction form
    18,940.72/28,419.27 = 10,165.38/x
  3. Step 3: Cross multiply
    18,940.72x = 28,419.27 × 10,165.38
  4. Step 4: Simplify right side
    18,940.72x = 288,892,678.87
  5. Step 5: Solve for x
    x = 288,892,678.87/18,940.72
  6. Step 6: Final answer
    x = 15,252.47

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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.