Home / 19,855.68-27,399.24-11,472.72

Finding the Fourth Proportional to 19,855.68, 27,399.24 and 11,472.72

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Solution

The fourth proportional to 19,855.68, 27,399.24 and 11,472.72 is: 15,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.68 : 27,399.24 = 11,472.72 : x
  2. Step 2: Convert to fraction form
    19,855.68/27,399.24 = 11,472.72/x
  3. Step 3: Cross multiply
    19,855.68x = 27,399.24 × 11,472.72
  4. Step 4: Simplify right side
    19,855.68x = 314,343,808.73
  5. Step 5: Solve for x
    x = 314,343,808.73/19,855.68
  6. Step 6: Final answer
    x = 15,831.43

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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.