Home / 20,858.13-31,290.61-6,814.08

Finding the Fourth Proportional to 20,858.13, 31,290.61 and 6,814.08

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Solution

The fourth proportional to 20,858.13, 31,290.61 and 6,814.08 is: 10,222.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.13 : 31,290.61 = 6,814.08 : x
  2. Step 2: Convert to fraction form
    20,858.13/31,290.61 = 6,814.08/x
  3. Step 3: Cross multiply
    20,858.13x = 31,290.61 × 6,814.08
  4. Step 4: Simplify right side
    20,858.13x = 213,216,719.79
  5. Step 5: Solve for x
    x = 213,216,719.79/20,858.13
  6. Step 6: Final answer
    x = 10,222.24

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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.