Home / 28,429.20-39,235.86-16,489.98

Finding the Fourth Proportional to 28,429.20, 39,235.86 and 16,489.98

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Solution

The fourth proportional to 28,429.20, 39,235.86 and 16,489.98 is: 22,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.20 : 39,235.86 = 16,489.98 : x
  2. Step 2: Convert to fraction form
    28,429.20/39,235.86 = 16,489.98/x
  3. Step 3: Cross multiply
    28,429.20x = 39,235.86 × 16,489.98
  4. Step 4: Simplify right side
    28,429.20x = 646,998,546.68
  5. Step 5: Solve for x
    x = 646,998,546.68/28,429.20
  6. Step 6: Final answer
    x = 22,758.24

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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.