Home / 20,692.15-28,554.79-11,493.38

Finding the Fourth Proportional to 20,692.15, 28,554.79 and 11,493.38

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Solution

The fourth proportional to 20,692.15, 28,554.79 and 11,493.38 is: 15,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.15 : 28,554.79 = 11,493.38 : x
  2. Step 2: Convert to fraction form
    20,692.15/28,554.79 = 11,493.38/x
  3. Step 3: Cross multiply
    20,692.15x = 28,554.79 × 11,493.38
  4. Step 4: Simplify right side
    20,692.15x = 328,191,052.29
  5. Step 5: Solve for x
    x = 328,191,052.29/20,692.15
  6. Step 6: Final answer
    x = 15,860.65

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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.