Home / 10,538.12-15,809.83-4,989.97

Finding the Fourth Proportional to 10,538.12, 15,809.83 and 4,989.97

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Solution

The fourth proportional to 10,538.12, 15,809.83 and 4,989.97 is: 7,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538.12 : 15,809.83 = 4,989.97 : x
  2. Step 2: Convert to fraction form
    10,538.12/15,809.83 = 4,989.97/x
  3. Step 3: Cross multiply
    10,538.12x = 15,809.83 × 4,989.97
  4. Step 4: Simplify right side
    10,538.12x = 78,890,577.41
  5. Step 5: Solve for x
    x = 78,890,577.41/10,538.12
  6. Step 6: Final answer
    x = 7,486.21

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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.