Home / 12,490.48-18,736.53-3,726.28

Finding the Fourth Proportional to 12,490.48, 18,736.53 and 3,726.28

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Solution

The fourth proportional to 12,490.48, 18,736.53 and 3,726.28 is: 5,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.48 : 18,736.53 = 3,726.28 : x
  2. Step 2: Convert to fraction form
    12,490.48/18,736.53 = 3,726.28/x
  3. Step 3: Cross multiply
    12,490.48x = 18,736.53 × 3,726.28
  4. Step 4: Simplify right side
    12,490.48x = 69,817,557.01
  5. Step 5: Solve for x
    x = 69,817,557.01/12,490.48
  6. Step 6: Final answer
    x = 5,589.66

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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.