Home / 12,125.04-18,187.52-3,805.78

Finding the Fourth Proportional to 12,125.04, 18,187.52 and 3,805.78

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Solution

The fourth proportional to 12,125.04, 18,187.52 and 3,805.78 is: 5,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.04 : 18,187.52 = 3,805.78 : x
  2. Step 2: Convert to fraction form
    12,125.04/18,187.52 = 3,805.78/x
  3. Step 3: Cross multiply
    12,125.04x = 18,187.52 × 3,805.78
  4. Step 4: Simplify right side
    12,125.04x = 69,217,699.87
  5. Step 5: Solve for x
    x = 69,217,699.87/12,125.04
  6. Step 6: Final answer
    x = 5,708.66

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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.