Home / 19,540.71-29,317.40-6,390.09

Finding the Fourth Proportional to 19,540.71, 29,317.40 and 6,390.09

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Solution

The fourth proportional to 19,540.71, 29,317.40 and 6,390.09 is: 9,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.71 : 29,317.40 = 6,390.09 : x
  2. Step 2: Convert to fraction form
    19,540.71/29,317.40 = 6,390.09/x
  3. Step 3: Cross multiply
    19,540.71x = 29,317.40 × 6,390.09
  4. Step 4: Simplify right side
    19,540.71x = 187,340,792.62
  5. Step 5: Solve for x
    x = 187,340,792.62/19,540.71
  6. Step 6: Final answer
    x = 9,587.21

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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.