Home / 20,645.08-28,490.58-11,692.54

Finding the Fourth Proportional to 20,645.08, 28,490.58 and 11,692.54

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Solution

The fourth proportional to 20,645.08, 28,490.58 and 11,692.54 is: 16,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.08 : 28,490.58 = 11,692.54 : x
  2. Step 2: Convert to fraction form
    20,645.08/28,490.58 = 11,692.54/x
  3. Step 3: Cross multiply
    20,645.08x = 28,490.58 × 11,692.54
  4. Step 4: Simplify right side
    20,645.08x = 333,127,246.27
  5. Step 5: Solve for x
    x = 333,127,246.27/20,645.08
  6. Step 6: Final answer
    x = 16,135.91

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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.