Home / 20,153.20-27,807.12-12,193.84

Finding the Fourth Proportional to 20,153.20, 27,807.12 and 12,193.84

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Solution

The fourth proportional to 20,153.20, 27,807.12 and 12,193.84 is: 16,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.20 : 27,807.12 = 12,193.84 : x
  2. Step 2: Convert to fraction form
    20,153.20/27,807.12 = 12,193.84/x
  3. Step 3: Cross multiply
    20,153.20x = 27,807.12 × 12,193.84
  4. Step 4: Simplify right side
    20,153.20x = 339,075,572.14
  5. Step 5: Solve for x
    x = 339,075,572.14/20,153.20
  6. Step 6: Final answer
    x = 16,824.90

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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.