Home / 20,178.72-27,847.44-12,625.20

Finding the Fourth Proportional to 20,178.72, 27,847.44 and 12,625.20

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Solution

The fourth proportional to 20,178.72, 27,847.44 and 12,625.20 is: 17,423.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.72 : 27,847.44 = 12,625.20 : x
  2. Step 2: Convert to fraction form
    20,178.72/27,847.44 = 12,625.20/x
  3. Step 3: Cross multiply
    20,178.72x = 27,847.44 × 12,625.20
  4. Step 4: Simplify right side
    20,178.72x = 351,579,499.49
  5. Step 5: Solve for x
    x = 351,579,499.49/20,178.72
  6. Step 6: Final answer
    x = 17,423.28

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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.