Home / 28,396.38-39,186.44-15,650.72

Finding the Fourth Proportional to 28,396.38, 39,186.44 and 15,650.72

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Solution

The fourth proportional to 28,396.38, 39,186.44 and 15,650.72 is: 21,597.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.38 : 39,186.44 = 15,650.72 : x
  2. Step 2: Convert to fraction form
    28,396.38/39,186.44 = 15,650.72/x
  3. Step 3: Cross multiply
    28,396.38x = 39,186.44 × 15,650.72
  4. Step 4: Simplify right side
    28,396.38x = 613,296,000.24
  5. Step 5: Solve for x
    x = 613,296,000.24/28,396.38
  6. Step 6: Final answer
    x = 21,597.68

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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.