Home / 20,905.08-28,847.10-11,952.30

Finding the Fourth Proportional to 20,905.08, 28,847.10 and 11,952.30

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Solution

The fourth proportional to 20,905.08, 28,847.10 and 11,952.30 is: 16,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.08 : 28,847.10 = 11,952.30 : x
  2. Step 2: Convert to fraction form
    20,905.08/28,847.10 = 11,952.30/x
  3. Step 3: Cross multiply
    20,905.08x = 28,847.10 × 11,952.30
  4. Step 4: Simplify right side
    20,905.08x = 344,789,193.33
  5. Step 5: Solve for x
    x = 344,789,193.33/20,905.08
  6. Step 6: Final answer
    x = 16,493.08

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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.