Home / 12,490.92-18,739.40-3,726.52

Finding the Fourth Proportional to 12,490.92, 18,739.40 and 3,726.52

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Solution

The fourth proportional to 12,490.92, 18,739.40 and 3,726.52 is: 5,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.92 : 18,739.40 = 3,726.52 : x
  2. Step 2: Convert to fraction form
    12,490.92/18,739.40 = 3,726.52/x
  3. Step 3: Cross multiply
    12,490.92x = 18,739.40 × 3,726.52
  4. Step 4: Simplify right side
    12,490.92x = 69,832,748.89
  5. Step 5: Solve for x
    x = 69,832,748.89/12,490.92
  6. Step 6: Final answer
    x = 5,590.68

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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.