Home / 28,209.08-38,918.12-16,878.84

Finding the Fourth Proportional to 28,209.08, 38,918.12 and 16,878.84

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Solution

The fourth proportional to 28,209.08, 38,918.12 and 16,878.84 is: 23,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.08 : 38,918.12 = 16,878.84 : x
  2. Step 2: Convert to fraction form
    28,209.08/38,918.12 = 16,878.84/x
  3. Step 3: Cross multiply
    28,209.08x = 38,918.12 × 16,878.84
  4. Step 4: Simplify right side
    28,209.08x = 656,892,636.19
  5. Step 5: Solve for x
    x = 656,892,636.19/28,209.08
  6. Step 6: Final answer
    x = 23,286.57

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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.