Home / 20,250.45-27,962.79-12,709.35

Finding the Fourth Proportional to 20,250.45, 27,962.79 and 12,709.35

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Solution

The fourth proportional to 20,250.45, 27,962.79 and 12,709.35 is: 17,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.45 : 27,962.79 = 12,709.35 : x
  2. Step 2: Convert to fraction form
    20,250.45/27,962.79 = 12,709.35/x
  3. Step 3: Cross multiply
    20,250.45x = 27,962.79 × 12,709.35
  4. Step 4: Simplify right side
    20,250.45x = 355,388,885.09
  5. Step 5: Solve for x
    x = 355,388,885.09/20,250.45
  6. Step 6: Final answer
    x = 17,549.68

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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.