Home / 12,557-18,835.05-3,791.69

Finding the Fourth Proportional to 12,557, 18,835.05 and 3,791.69

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Solution

The fourth proportional to 12,557, 18,835.05 and 3,791.69 is: 5,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557 : 18,835.05 = 3,791.69 : x
  2. Step 2: Convert to fraction form
    12,557/18,835.05 = 3,791.69/x
  3. Step 3: Cross multiply
    12,557x = 18,835.05 × 3,791.69
  4. Step 4: Simplify right side
    12,557x = 71,416,651.78
  5. Step 5: Solve for x
    x = 71,416,651.78/12,557
  6. Step 6: Final answer
    x = 5,687.40

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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.