Home / 19,389.31-29,026.55-11,969.91

Finding the Fourth Proportional to 19,389.31, 29,026.55 and 11,969.91

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Solution

The fourth proportional to 19,389.31, 29,026.55 and 11,969.91 is: 17,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.31 : 29,026.55 = 11,969.91 : x
  2. Step 2: Convert to fraction form
    19,389.31/29,026.55 = 11,969.91/x
  3. Step 3: Cross multiply
    19,389.31x = 29,026.55 × 11,969.91
  4. Step 4: Simplify right side
    19,389.31x = 347,445,221.04
  5. Step 5: Solve for x
    x = 347,445,221.04/19,389.31
  6. Step 6: Final answer
    x = 17,919.42

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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.