Home / 20,922.79-31,386.03-5,930.11

Finding the Fourth Proportional to 20,922.79, 31,386.03 and 5,930.11

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Solution

The fourth proportional to 20,922.79, 31,386.03 and 5,930.11 is: 8,895.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.79 : 31,386.03 = 5,930.11 : x
  2. Step 2: Convert to fraction form
    20,922.79/31,386.03 = 5,930.11/x
  3. Step 3: Cross multiply
    20,922.79x = 31,386.03 × 5,930.11
  4. Step 4: Simplify right side
    20,922.79x = 186,122,509.66
  5. Step 5: Solve for x
    x = 186,122,509.66/20,922.79
  6. Step 6: Final answer
    x = 8,895.68

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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.