Home / 27,121.42-37,395.67-21,739.56

Finding the Fourth Proportional to 27,121.42, 37,395.67 and 21,739.56

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Solution

The fourth proportional to 27,121.42, 37,395.67 and 21,739.56 is: 29,975.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.42 : 37,395.67 = 21,739.56 : x
  2. Step 2: Convert to fraction form
    27,121.42/37,395.67 = 21,739.56/x
  3. Step 3: Cross multiply
    27,121.42x = 37,395.67 × 21,739.56
  4. Step 4: Simplify right side
    27,121.42x = 812,965,411.71
  5. Step 5: Solve for x
    x = 812,965,411.71/27,121.42
  6. Step 6: Final answer
    x = 29,975.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.