Home / 25,139.05-37,716.78-11,989.71

Finding the Fourth Proportional to 25,139.05, 37,716.78 and 11,989.71

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Solution

The fourth proportional to 25,139.05, 37,716.78 and 11,989.71 is: 17,988.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.05 : 37,716.78 = 11,989.71 : x
  2. Step 2: Convert to fraction form
    25,139.05/37,716.78 = 11,989.71/x
  3. Step 3: Cross multiply
    25,139.05x = 37,716.78 × 11,989.71
  4. Step 4: Simplify right side
    25,139.05x = 452,213,318.65
  5. Step 5: Solve for x
    x = 452,213,318.65/25,139.05
  6. Step 6: Final answer
    x = 17,988.48

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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.