Home / 13,821.92-20,721.52-5,498.36

Finding the Fourth Proportional to 13,821.92, 20,721.52 and 5,498.36

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Solution

The fourth proportional to 13,821.92, 20,721.52 and 5,498.36 is: 8,243.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.92 : 20,721.52 = 5,498.36 : x
  2. Step 2: Convert to fraction form
    13,821.92/20,721.52 = 5,498.36/x
  3. Step 3: Cross multiply
    13,821.92x = 20,721.52 × 5,498.36
  4. Step 4: Simplify right side
    13,821.92x = 113,934,376.71
  5. Step 5: Solve for x
    x = 113,934,376.71/13,821.92
  6. Step 6: Final answer
    x = 8,243.02

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1.5x scale

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.