Home / 20,786.04-31,186.08-8,934.39

Finding the Fourth Proportional to 20,786.04, 31,186.08 and 8,934.39

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Solution

The fourth proportional to 20,786.04, 31,186.08 and 8,934.39 is: 13,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.04 : 31,186.08 = 8,934.39 : x
  2. Step 2: Convert to fraction form
    20,786.04/31,186.08 = 8,934.39/x
  3. Step 3: Cross multiply
    20,786.04x = 31,186.08 × 8,934.39
  4. Step 4: Simplify right side
    20,786.04x = 278,628,601.29
  5. Step 5: Solve for x
    x = 278,628,601.29/20,786.04
  6. Step 6: Final answer
    x = 13,404.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.