Home / 20,330.54-28,052.45-11,715.38

Finding the Fourth Proportional to 20,330.54, 28,052.45 and 11,715.38

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Solution

The fourth proportional to 20,330.54, 28,052.45 and 11,715.38 is: 16,165.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.54 : 28,052.45 = 11,715.38 : x
  2. Step 2: Convert to fraction form
    20,330.54/28,052.45 = 11,715.38/x
  3. Step 3: Cross multiply
    20,330.54x = 28,052.45 × 11,715.38
  4. Step 4: Simplify right side
    20,330.54x = 328,644,912.84
  5. Step 5: Solve for x
    x = 328,644,912.84/20,330.54
  6. Step 6: Final answer
    x = 16,165.09

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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.