Home / 13,222.35-18,230.81-9,679.41

Finding the Fourth Proportional to 13,222.35, 18,230.81 and 9,679.41

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Solution

The fourth proportional to 13,222.35, 18,230.81 and 9,679.41 is: 13,345.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.35 : 18,230.81 = 9,679.41 : x
  2. Step 2: Convert to fraction form
    13,222.35/18,230.81 = 9,679.41/x
  3. Step 3: Cross multiply
    13,222.35x = 18,230.81 × 9,679.41
  4. Step 4: Simplify right side
    13,222.35x = 176,463,436.23
  5. Step 5: Solve for x
    x = 176,463,436.23/13,222.35
  6. Step 6: Final answer
    x = 13,345.85

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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.