Home / 10,356.70-15,539.85-5,431.90

Finding the Fourth Proportional to 10,356.70, 15,539.85 and 5,431.90

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Solution

The fourth proportional to 10,356.70, 15,539.85 and 5,431.90 is: 8,150.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.70 : 15,539.85 = 5,431.90 : x
  2. Step 2: Convert to fraction form
    10,356.70/15,539.85 = 5,431.90/x
  3. Step 3: Cross multiply
    10,356.70x = 15,539.85 × 5,431.90
  4. Step 4: Simplify right side
    10,356.70x = 84,410,911.22
  5. Step 5: Solve for x
    x = 84,410,911.22/10,356.70
  6. Step 6: Final answer
    x = 8,150.37

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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.