Home / 20,872.76-31,294.26-9,773.36

Finding the Fourth Proportional to 20,872.76, 31,294.26 and 9,773.36

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Solution

The fourth proportional to 20,872.76, 31,294.26 and 9,773.36 is: 14,653.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.76 : 31,294.26 = 9,773.36 : x
  2. Step 2: Convert to fraction form
    20,872.76/31,294.26 = 9,773.36/x
  3. Step 3: Cross multiply
    20,872.76x = 31,294.26 × 9,773.36
  4. Step 4: Simplify right side
    20,872.76x = 305,850,068.91
  5. Step 5: Solve for x
    x = 305,850,068.91/20,872.76
  6. Step 6: Final answer
    x = 14,653.07

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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.