Home / 14,195.37-21,311.90-12,128.66

Finding the Fourth Proportional to 14,195.37, 21,311.90 and 12,128.66

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Solution

The fourth proportional to 14,195.37, 21,311.90 and 12,128.66 is: 18,209.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,195.37 : 21,311.90 = 12,128.66 : x
  2. Step 2: Convert to fraction form
    14,195.37/21,311.90 = 12,128.66/x
  3. Step 3: Cross multiply
    14,195.37x = 21,311.90 × 12,128.66
  4. Step 4: Simplify right side
    14,195.37x = 258,484,621.85
  5. Step 5: Solve for x
    x = 258,484,621.85/14,195.37
  6. Step 6: Final answer
    x = 18,209.08

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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.