Home / 13,125.38-19,688.06-3,891.38

Finding the Fourth Proportional to 13,125.38, 19,688.06 and 3,891.38

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Solution

The fourth proportional to 13,125.38, 19,688.06 and 3,891.38 is: 5,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.38 : 19,688.06 = 3,891.38 : x
  2. Step 2: Convert to fraction form
    13,125.38/19,688.06 = 3,891.38/x
  3. Step 3: Cross multiply
    13,125.38x = 19,688.06 × 3,891.38
  4. Step 4: Simplify right side
    13,125.38x = 76,613,634.21
  5. Step 5: Solve for x
    x = 76,613,634.21/13,125.38
  6. Step 6: Final answer
    x = 5,837.06

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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.