Home / 22,351.79-30,845.54-13,399.67

Finding the Fourth Proportional to 22,351.79, 30,845.54 and 13,399.67

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Solution

The fourth proportional to 22,351.79, 30,845.54 and 13,399.67 is: 18,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,351.79 : 30,845.54 = 13,399.67 : x
  2. Step 2: Convert to fraction form
    22,351.79/30,845.54 = 13,399.67/x
  3. Step 3: Cross multiply
    22,351.79x = 30,845.54 × 13,399.67
  4. Step 4: Simplify right side
    22,351.79x = 413,319,989.97
  5. Step 5: Solve for x
    x = 413,319,989.97/22,351.79
  6. Step 6: Final answer
    x = 18,491.58

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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.