Home / 19,722.50-29,569.16-11,929.58

Finding the Fourth Proportional to 19,722.50, 29,569.16 and 11,929.58

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Solution

The fourth proportional to 19,722.50, 29,569.16 and 11,929.58 is: 17,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.50 : 29,569.16 = 11,929.58 : x
  2. Step 2: Convert to fraction form
    19,722.50/29,569.16 = 11,929.58/x
  3. Step 3: Cross multiply
    19,722.50x = 29,569.16 × 11,929.58
  4. Step 4: Simplify right side
    19,722.50x = 352,747,659.75
  5. Step 5: Solve for x
    x = 352,747,659.75/19,722.50
  6. Step 6: Final answer
    x = 17,885.54

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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.