Home / 19,929.11-29,895.38-5,137.90

Finding the Fourth Proportional to 19,929.11, 29,895.38 and 5,137.90

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Solution

The fourth proportional to 19,929.11, 29,895.38 and 5,137.90 is: 7,707.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.11 : 29,895.38 = 5,137.90 : x
  2. Step 2: Convert to fraction form
    19,929.11/29,895.38 = 5,137.90/x
  3. Step 3: Cross multiply
    19,929.11x = 29,895.38 × 5,137.90
  4. Step 4: Simplify right side
    19,929.11x = 153,599,495.09
  5. Step 5: Solve for x
    x = 153,599,495.09/19,929.11
  6. Step 6: Final answer
    x = 7,707.29

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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.