Home / 20,692.20-28,553.94-12,307.08

Finding the Fourth Proportional to 20,692.20, 28,553.94 and 12,307.08

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Solution

The fourth proportional to 20,692.20, 28,553.94 and 12,307.08 is: 16,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.20 : 28,553.94 = 12,307.08 : x
  2. Step 2: Convert to fraction form
    20,692.20/28,553.94 = 12,307.08/x
  3. Step 3: Cross multiply
    20,692.20x = 28,553.94 × 12,307.08
  4. Step 4: Simplify right side
    20,692.20x = 351,415,623.90
  5. Step 5: Solve for x
    x = 351,415,623.90/20,692.20
  6. Step 6: Final answer
    x = 16,983.00

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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.