Home / 15,631.31-23,449.40-5,240.63

Finding the Fourth Proportional to 15,631.31, 23,449.40 and 5,240.63

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Solution

The fourth proportional to 15,631.31, 23,449.40 and 5,240.63 is: 7,861.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.31 : 23,449.40 = 5,240.63 : x
  2. Step 2: Convert to fraction form
    15,631.31/23,449.40 = 5,240.63/x
  3. Step 3: Cross multiply
    15,631.31x = 23,449.40 × 5,240.63
  4. Step 4: Simplify right side
    15,631.31x = 122,889,485.67
  5. Step 5: Solve for x
    x = 122,889,485.67/15,631.31
  6. Step 6: Final answer
    x = 7,861.75

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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.