Home / 12,458.30-18,687.50-3,693.28

Finding the Fourth Proportional to 12,458.30, 18,687.50 and 3,693.28

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Solution

The fourth proportional to 12,458.30, 18,687.50 and 3,693.28 is: 5,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.30 : 18,687.50 = 3,693.28 : x
  2. Step 2: Convert to fraction form
    12,458.30/18,687.50 = 3,693.28/x
  3. Step 3: Cross multiply
    12,458.30x = 18,687.50 × 3,693.28
  4. Step 4: Simplify right side
    12,458.30x = 69,018,170
  5. Step 5: Solve for x
    x = 69,018,170/12,458.30
  6. Step 6: Final answer
    x = 5,539.93

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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.