Home / 20,898.72-31,294.56-11,528.33

Finding the Fourth Proportional to 20,898.72, 31,294.56 and 11,528.33

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Solution

The fourth proportional to 20,898.72, 31,294.56 and 11,528.33 is: 17,262.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.72 : 31,294.56 = 11,528.33 : x
  2. Step 2: Convert to fraction form
    20,898.72/31,294.56 = 11,528.33/x
  3. Step 3: Cross multiply
    20,898.72x = 31,294.56 × 11,528.33
  4. Step 4: Simplify right side
    20,898.72x = 360,773,869.22
  5. Step 5: Solve for x
    x = 360,773,869.22/20,898.72
  6. Step 6: Final answer
    x = 17,262.96

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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.