Home / 20,950.38-31,428.81-13,046.81

Finding the Fourth Proportional to 20,950.38, 31,428.81 and 13,046.81

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Solution

The fourth proportional to 20,950.38, 31,428.81 and 13,046.81 is: 19,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.38 : 31,428.81 = 13,046.81 : x
  2. Step 2: Convert to fraction form
    20,950.38/31,428.81 = 13,046.81/x
  3. Step 3: Cross multiply
    20,950.38x = 31,428.81 × 13,046.81
  4. Step 4: Simplify right side
    20,950.38x = 410,045,555.45
  5. Step 5: Solve for x
    x = 410,045,555.45/20,950.38
  6. Step 6: Final answer
    x = 19,572.23

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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.