Home / 20,228.34-27,914.46-12,678.75

Finding the Fourth Proportional to 20,228.34, 27,914.46 and 12,678.75

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Solution

The fourth proportional to 20,228.34, 27,914.46 and 12,678.75 is: 17,496.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.34 : 27,914.46 = 12,678.75 : x
  2. Step 2: Convert to fraction form
    20,228.34/27,914.46 = 12,678.75/x
  3. Step 3: Cross multiply
    20,228.34x = 27,914.46 × 12,678.75
  4. Step 4: Simplify right side
    20,228.34x = 353,920,459.73
  5. Step 5: Solve for x
    x = 353,920,459.73/20,228.34
  6. Step 6: Final answer
    x = 17,496.27

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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.