Home / 36,119.86-54,166.32-12,420.70

Finding the Fourth Proportional to 36,119.86, 54,166.32 and 12,420.70

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Solution

The fourth proportional to 36,119.86, 54,166.32 and 12,420.70 is: 18,626.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,119.86 : 54,166.32 = 12,420.70 : x
  2. Step 2: Convert to fraction form
    36,119.86/54,166.32 = 12,420.70/x
  3. Step 3: Cross multiply
    36,119.86x = 54,166.32 × 12,420.70
  4. Step 4: Simplify right side
    36,119.86x = 672,783,475.41
  5. Step 5: Solve for x
    x = 672,783,475.41/36,119.86
  6. Step 6: Final answer
    x = 18,626.42

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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.