Home / 12,301.80-18,455.62-3,981.81

Finding the Fourth Proportional to 12,301.80, 18,455.62 and 3,981.81

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Solution

The fourth proportional to 12,301.80, 18,455.62 and 3,981.81 is: 5,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,301.80 : 18,455.62 = 3,981.81 : x
  2. Step 2: Convert to fraction form
    12,301.80/18,455.62 = 3,981.81/x
  3. Step 3: Cross multiply
    12,301.80x = 18,455.62 × 3,981.81
  4. Step 4: Simplify right side
    12,301.80x = 73,486,853.92
  5. Step 5: Solve for x
    x = 73,486,853.92/12,301.80
  6. Step 6: Final answer
    x = 5,973.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.