Home / 20,679.62-31,009.68-14,446.67

Finding the Fourth Proportional to 20,679.62, 31,009.68 and 14,446.67

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Solution

The fourth proportional to 20,679.62, 31,009.68 and 14,446.67 is: 21,663.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.62 : 31,009.68 = 14,446.67 : x
  2. Step 2: Convert to fraction form
    20,679.62/31,009.68 = 14,446.67/x
  3. Step 3: Cross multiply
    20,679.62x = 31,009.68 × 14,446.67
  4. Step 4: Simplify right side
    20,679.62x = 447,986,458.72
  5. Step 5: Solve for x
    x = 447,986,458.72/20,679.62
  6. Step 6: Final answer
    x = 21,663.19

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1.5x scale

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.