Home / 20,964.46-31,446.78-19,913.38

Finding the Fourth Proportional to 20,964.46, 31,446.78 and 19,913.38

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Solution

The fourth proportional to 20,964.46, 31,446.78 and 19,913.38 is: 29,870.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.46 : 31,446.78 = 19,913.38 : x
  2. Step 2: Convert to fraction form
    20,964.46/31,446.78 = 19,913.38/x
  3. Step 3: Cross multiply
    20,964.46x = 31,446.78 × 19,913.38
  4. Step 4: Simplify right side
    20,964.46x = 626,211,679.92
  5. Step 5: Solve for x
    x = 626,211,679.92/20,964.46
  6. Step 6: Final answer
    x = 29,870.16

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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.