Home / 10,363.14-15,549.30-5,431.60

Finding the Fourth Proportional to 10,363.14, 15,549.30 and 5,431.60

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Solution

The fourth proportional to 10,363.14, 15,549.30 and 5,431.60 is: 8,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,363.14 : 15,549.30 = 5,431.60 : x
  2. Step 2: Convert to fraction form
    10,363.14/15,549.30 = 5,431.60/x
  3. Step 3: Cross multiply
    10,363.14x = 15,549.30 × 5,431.60
  4. Step 4: Simplify right side
    10,363.14x = 84,457,597.32
  5. Step 5: Solve for x
    x = 84,457,597.32/10,363.14
  6. Step 6: Final answer
    x = 8,149.81

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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.