Home / 20,857.38-28,813.77-16,904.58

Finding the Fourth Proportional to 20,857.38, 28,813.77 and 16,904.58

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Solution

The fourth proportional to 20,857.38, 28,813.77 and 16,904.58 is: 23,353.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.38 : 28,813.77 = 16,904.58 : x
  2. Step 2: Convert to fraction form
    20,857.38/28,813.77 = 16,904.58/x
  3. Step 3: Cross multiply
    20,857.38x = 28,813.77 × 16,904.58
  4. Step 4: Simplify right side
    20,857.38x = 487,084,680.07
  5. Step 5: Solve for x
    x = 487,084,680.07/20,857.38
  6. Step 6: Final answer
    x = 23,353.11

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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.