Home / 21,248.44-31,880.52-8,769.56

Finding the Fourth Proportional to 21,248.44, 31,880.52 and 8,769.56

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Solution

The fourth proportional to 21,248.44, 31,880.52 and 8,769.56 is: 13,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.44 : 31,880.52 = 8,769.56 : x
  2. Step 2: Convert to fraction form
    21,248.44/31,880.52 = 8,769.56/x
  3. Step 3: Cross multiply
    21,248.44x = 31,880.52 × 8,769.56
  4. Step 4: Simplify right side
    21,248.44x = 279,578,132.97
  5. Step 5: Solve for x
    x = 279,578,132.97/21,248.44
  6. Step 6: Final answer
    x = 13,157.58

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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.