Home / 12,105.80-18,153.92-4,709.19

Finding the Fourth Proportional to 12,105.80, 18,153.92 and 4,709.19

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Solution

The fourth proportional to 12,105.80, 18,153.92 and 4,709.19 is: 7,061.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.80 : 18,153.92 = 4,709.19 : x
  2. Step 2: Convert to fraction form
    12,105.80/18,153.92 = 4,709.19/x
  3. Step 3: Cross multiply
    12,105.80x = 18,153.92 × 4,709.19
  4. Step 4: Simplify right side
    12,105.80x = 85,490,236.26
  5. Step 5: Solve for x
    x = 85,490,236.26/12,105.80
  6. Step 6: Final answer
    x = 7,061.92

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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.