Home / 12,161.86-18,230.25-8,821.74

Finding the Fourth Proportional to 12,161.86, 18,230.25 and 8,821.74

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Solution

The fourth proportional to 12,161.86, 18,230.25 and 8,821.74 is: 13,223.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.86 : 18,230.25 = 8,821.74 : x
  2. Step 2: Convert to fraction form
    12,161.86/18,230.25 = 8,821.74/x
  3. Step 3: Cross multiply
    12,161.86x = 18,230.25 × 8,821.74
  4. Step 4: Simplify right side
    12,161.86x = 160,822,525.64
  5. Step 5: Solve for x
    x = 160,822,525.64/12,161.86
  6. Step 6: Final answer
    x = 13,223.51

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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.