Home / 13,289.62-19,934.69-3,929.63

Finding the Fourth Proportional to 13,289.62, 19,934.69 and 3,929.63

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Solution

The fourth proportional to 13,289.62, 19,934.69 and 3,929.63 is: 5,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.62 : 19,934.69 = 3,929.63 : x
  2. Step 2: Convert to fraction form
    13,289.62/19,934.69 = 3,929.63/x
  3. Step 3: Cross multiply
    13,289.62x = 19,934.69 × 3,929.63
  4. Step 4: Simplify right side
    13,289.62x = 78,335,970.78
  5. Step 5: Solve for x
    x = 78,335,970.78/13,289.62
  6. Step 6: Final answer
    x = 5,894.52

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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.