Home / 36,119.45-54,165.70-12,420.29

Finding the Fourth Proportional to 36,119.45, 54,165.70 and 12,420.29

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Solution

The fourth proportional to 36,119.45, 54,165.70 and 12,420.29 is: 18,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,119.45 : 54,165.70 = 12,420.29 : x
  2. Step 2: Convert to fraction form
    36,119.45/54,165.70 = 12,420.29/x
  3. Step 3: Cross multiply
    36,119.45x = 54,165.70 × 12,420.29
  4. Step 4: Simplify right side
    36,119.45x = 672,753,702.05
  5. Step 5: Solve for x
    x = 672,753,702.05/36,119.45
  6. Step 6: Final answer
    x = 18,625.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.