Home / 28,342.85-39,105.18-16,405.47

Finding the Fourth Proportional to 28,342.85, 39,105.18 and 16,405.47

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Solution

The fourth proportional to 28,342.85, 39,105.18 and 16,405.47 is: 22,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.85 : 39,105.18 = 16,405.47 : x
  2. Step 2: Convert to fraction form
    28,342.85/39,105.18 = 16,405.47/x
  3. Step 3: Cross multiply
    28,342.85x = 39,105.18 × 16,405.47
  4. Step 4: Simplify right side
    28,342.85x = 641,538,857.33
  5. Step 5: Solve for x
    x = 641,538,857.33/28,342.85
  6. Step 6: Final answer
    x = 22,634.95

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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.