Home / 19,847.41-27,390.81-13,121.35

Finding the Fourth Proportional to 19,847.41, 27,390.81 and 13,121.35

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Solution

The fourth proportional to 19,847.41, 27,390.81 and 13,121.35 is: 18,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,847.41 : 27,390.81 = 13,121.35 : x
  2. Step 2: Convert to fraction form
    19,847.41/27,390.81 = 13,121.35/x
  3. Step 3: Cross multiply
    19,847.41x = 27,390.81 × 13,121.35
  4. Step 4: Simplify right side
    19,847.41x = 359,404,404.79
  5. Step 5: Solve for x
    x = 359,404,404.79/19,847.41
  6. Step 6: Final answer
    x = 18,108.38

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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.