Home / 18,439.65-27,615.74-13,161.69

Finding the Fourth Proportional to 18,439.65, 27,615.74 and 13,161.69

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Solution

The fourth proportional to 18,439.65, 27,615.74 and 13,161.69 is: 19,711.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.65 : 27,615.74 = 13,161.69 : x
  2. Step 2: Convert to fraction form
    18,439.65/27,615.74 = 13,161.69/x
  3. Step 3: Cross multiply
    18,439.65x = 27,615.74 × 13,161.69
  4. Step 4: Simplify right side
    18,439.65x = 363,469,743.19
  5. Step 5: Solve for x
    x = 363,469,743.19/18,439.65
  6. Step 6: Final answer
    x = 19,711.31

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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.