Home / 13,898.25-19,179.68-7,929.86

Finding the Fourth Proportional to 13,898.25, 19,179.68 and 7,929.86

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Solution

The fourth proportional to 13,898.25, 19,179.68 and 7,929.86 is: 10,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.25 : 19,179.68 = 7,929.86 : x
  2. Step 2: Convert to fraction form
    13,898.25/19,179.68 = 7,929.86/x
  3. Step 3: Cross multiply
    13,898.25x = 19,179.68 × 7,929.86
  4. Step 4: Simplify right side
    13,898.25x = 152,092,041.70
  5. Step 5: Solve for x
    x = 152,092,041.70/13,898.25
  6. Step 6: Final answer
    x = 10,943.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.