Home / 28,340.38-39,115.14-18,763.37

Finding the Fourth Proportional to 28,340.38, 39,115.14 and 18,763.37

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Solution

The fourth proportional to 28,340.38, 39,115.14 and 18,763.37 is: 25,897.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.38 : 39,115.14 = 18,763.37 : x
  2. Step 2: Convert to fraction form
    28,340.38/39,115.14 = 18,763.37/x
  3. Step 3: Cross multiply
    28,340.38x = 39,115.14 × 18,763.37
  4. Step 4: Simplify right side
    28,340.38x = 733,931,942.21
  5. Step 5: Solve for x
    x = 733,931,942.21/28,340.38
  6. Step 6: Final answer
    x = 25,897.04

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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.