Home / 18,243.12-25,175.66-10,689.67

Finding the Fourth Proportional to 18,243.12, 25,175.66 and 10,689.67

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Solution

The fourth proportional to 18,243.12, 25,175.66 and 10,689.67 is: 14,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.12 : 25,175.66 = 10,689.67 : x
  2. Step 2: Convert to fraction form
    18,243.12/25,175.66 = 10,689.67/x
  3. Step 3: Cross multiply
    18,243.12x = 25,175.66 × 10,689.67
  4. Step 4: Simplify right side
    18,243.12x = 269,119,535.58
  5. Step 5: Solve for x
    x = 269,119,535.58/18,243.12
  6. Step 6: Final answer
    x = 14,751.83

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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.