Home / 20,930.23-31,395.36-5,347.87

Finding the Fourth Proportional to 20,930.23, 31,395.36 and 5,347.87

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Solution

The fourth proportional to 20,930.23, 31,395.36 and 5,347.87 is: 8,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.23 : 31,395.36 = 5,347.87 : x
  2. Step 2: Convert to fraction form
    20,930.23/31,395.36 = 5,347.87/x
  3. Step 3: Cross multiply
    20,930.23x = 31,395.36 × 5,347.87
  4. Step 4: Simplify right side
    20,930.23x = 167,898,303.88
  5. Step 5: Solve for x
    x = 167,898,303.88/20,930.23
  6. Step 6: Final answer
    x = 8,021.81

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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.