Home / 13,313.30-18,450.01-13,125.38

Finding the Fourth Proportional to 13,313.30, 18,450.01 and 13,125.38

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Solution

The fourth proportional to 13,313.30, 18,450.01 and 13,125.38 is: 18,189.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.30 : 18,450.01 = 13,125.38 : x
  2. Step 2: Convert to fraction form
    13,313.30/18,450.01 = 13,125.38/x
  3. Step 3: Cross multiply
    13,313.30x = 18,450.01 × 13,125.38
  4. Step 4: Simplify right side
    13,313.30x = 242,163,316.41
  5. Step 5: Solve for x
    x = 242,163,316.41/13,313.30
  6. Step 6: Final answer
    x = 18,189.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.