Home / 28,716.60-39,624.64-16,138.92

Finding the Fourth Proportional to 28,716.60, 39,624.64 and 16,138.92

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Solution

The fourth proportional to 28,716.60, 39,624.64 and 16,138.92 is: 22,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.60 : 39,624.64 = 16,138.92 : x
  2. Step 2: Convert to fraction form
    28,716.60/39,624.64 = 16,138.92/x
  3. Step 3: Cross multiply
    28,716.60x = 39,624.64 × 16,138.92
  4. Step 4: Simplify right side
    28,716.60x = 639,498,894.99
  5. Step 5: Solve for x
    x = 639,498,894.99/28,716.60
  6. Step 6: Final answer
    x = 22,269.31

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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.