Home / 20,869.29-31,309.38-6,077.88

Finding the Fourth Proportional to 20,869.29, 31,309.38 and 6,077.88

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Solution

The fourth proportional to 20,869.29, 31,309.38 and 6,077.88 is: 9,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.29 : 31,309.38 = 6,077.88 : x
  2. Step 2: Convert to fraction form
    20,869.29/31,309.38 = 6,077.88/x
  3. Step 3: Cross multiply
    20,869.29x = 31,309.38 × 6,077.88
  4. Step 4: Simplify right side
    20,869.29x = 190,294,654.51
  5. Step 5: Solve for x
    x = 190,294,654.51/20,869.29
  6. Step 6: Final answer
    x = 9,118.41

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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.