Home / 28,815.08-39,764.28-16,239.84

Finding the Fourth Proportional to 28,815.08, 39,764.28 and 16,239.84

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Solution

The fourth proportional to 28,815.08, 39,764.28 and 16,239.84 is: 22,410.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.08 : 39,764.28 = 16,239.84 : x
  2. Step 2: Convert to fraction form
    28,815.08/39,764.28 = 16,239.84/x
  3. Step 3: Cross multiply
    28,815.08x = 39,764.28 × 16,239.84
  4. Step 4: Simplify right side
    28,815.08x = 645,765,544.92
  5. Step 5: Solve for x
    x = 645,765,544.92/28,815.08
  6. Step 6: Final answer
    x = 22,410.68

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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.