Home / 10,409.31-15,619.09-4,861.85

Finding the Fourth Proportional to 10,409.31, 15,619.09 and 4,861.85

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Solution

The fourth proportional to 10,409.31, 15,619.09 and 4,861.85 is: 7,295.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,409.31 : 15,619.09 = 4,861.85 : x
  2. Step 2: Convert to fraction form
    10,409.31/15,619.09 = 4,861.85/x
  3. Step 3: Cross multiply
    10,409.31x = 15,619.09 × 4,861.85
  4. Step 4: Simplify right side
    10,409.31x = 75,937,699.61
  5. Step 5: Solve for x
    x = 75,937,699.61/10,409.31
  6. Step 6: Final answer
    x = 7,295.17

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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.