Home / 11,929.40-17,886.90-5,354.36

Finding the Fourth Proportional to 11,929.40, 17,886.90 and 5,354.36

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Solution

The fourth proportional to 11,929.40, 17,886.90 and 5,354.36 is: 8,028.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.40 : 17,886.90 = 5,354.36 : x
  2. Step 2: Convert to fraction form
    11,929.40/17,886.90 = 5,354.36/x
  3. Step 3: Cross multiply
    11,929.40x = 17,886.90 × 5,354.36
  4. Step 4: Simplify right side
    11,929.40x = 95,772,901.88
  5. Step 5: Solve for x
    x = 95,772,901.88/11,929.40
  6. Step 6: Final answer
    x = 8,028.31

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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.