Home / 22,911.05-31,617.03-12,839.92

Finding the Fourth Proportional to 22,911.05, 31,617.03 and 12,839.92

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Solution

The fourth proportional to 22,911.05, 31,617.03 and 12,839.92 is: 17,718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.05 : 31,617.03 = 12,839.92 : x
  2. Step 2: Convert to fraction form
    22,911.05/31,617.03 = 12,839.92/x
  3. Step 3: Cross multiply
    22,911.05x = 31,617.03 × 12,839.92
  4. Step 4: Simplify right side
    22,911.05x = 405,960,104.94
  5. Step 5: Solve for x
    x = 405,960,104.94/22,911.05
  6. Step 6: Final answer
    x = 17,718.96

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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.