Home / 20,167.86-27,834.10-12,209.88

Finding the Fourth Proportional to 20,167.86, 27,834.10 and 12,209.88

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Solution

The fourth proportional to 20,167.86, 27,834.10 and 12,209.88 is: 16,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.86 : 27,834.10 = 12,209.88 : x
  2. Step 2: Convert to fraction form
    20,167.86/27,834.10 = 12,209.88/x
  3. Step 3: Cross multiply
    20,167.86x = 27,834.10 × 12,209.88
  4. Step 4: Simplify right side
    20,167.86x = 339,851,020.91
  5. Step 5: Solve for x
    x = 339,851,020.91/20,167.86
  6. Step 6: Final answer
    x = 16,851.12

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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.